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Skeletal and smooth muscles move when nerve impulses sent from What stimulate the muscle fibers telling them to either contract or relax A.PNS B.head C. CNS

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Answer: The correct answer is C; CNS.

Explanation:

The CNS is short of the central nervous system. This system sends nerve impulses to stimulate both the skeletal and smooth muscles making them move, contract, and relax. The nervous system is made up of both the central nervous system and the peripheral nervous system. The main organs in the CNS are the spinal cord and the brain. The central nervous system is comprised of billions of nerve cells. The CNS controls bodily functions, your thoughts, and even your memory.

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The muscular system is composed of approximately 600 smooth, cardiac or skeletal muscles ?

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The muscular system is composed of approximately 600 smooth, cardiac or skeletal muscles ?

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Which connective tissue forms the outer surface of each skeletal muscle? endomysium epimysium perimysium aponeurosis

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Answered by answersmine AT 22/10/2019 – 04:55 AM

Epimysium is the name of the connective tissue which forms the outer surface of each skeletal muscle. The term is derived from the words “epi” meaning (outer or superficial), and “mysium” meaning (of muscle).

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In what ways would understanding the body position,directions, and planes assist you with tasks related to the integumentary, skeletal, muscular and digestive system?

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1. The answer is “C”.

“Identical twins” who have been raised apart are typically more similar in intelligence level than biological siblings raised together because they have been born with the same genetic code.

Identical twins originate from a single fertilized egg that parts into two. Before it parts, it is either male or female. After it parts, there are either two guys or two females. The two sections of the fertilized egg embed in the uterus and every create one of the twins.  

Identical twins have the equivalent hereditary source. No immediate reason for monozygotic twinning has been resolved; it isn’t innate. Monozygotic twins speak to around 33% all things considered. They may look strikingly comparative, and it might be hard to reveal to them separated.

2. The answer is “A”.

Lawrence Kohlberg felt that one of the only ways individuals will accomplish the objectives in each of his six stages was to participate in “consensus democracy” in small group settings.

Lawrence Kohlberg felt that the best way to support development through these stages was by discourse of good problems and by investment in consensus democracy inside small groups. Consensus democracy was rule by understanding of the gathering, not larger part rule. This would invigorate and widen the reasoning of youngsters and grown-ups, enabling them to advance starting with one phase then onto the next.

3. The answer is “D.  showing a learner how to correct common mistakes”.

The term scaffolding alludes to a procedure in which instructors display or exhibit how to take care of an issue, and afterward venture back, offering support as required. Analyst and instructional architect Jerome Bruner first utilized the term ‘scaffolding’ in this setting, harking back to the 1960s. The hypothesis is that when understudies are given the help they require while discovering some new information, they stand a superior possibility of utilizing that learning freely. Bruner suggests positive association and three methods of portrayal amid educating: activities, pictures, and dialect.  

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________ is a general term for pain and stiffness that affects the skeletal or muscular system.

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There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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What is the relationship between structure and function in the selected muscle? – Muscle – Human Cardiac – Smooth Muscle – Skeletal Muscle

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There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes a short time, while the action of the endocrine system is slow and takes a long time.

The functional unit of the nervous system is the nerve cell or the neuron. The neuron consists of a cell body and the axon. The cell body starts with the dendrites that receive the messages or the impulses from other neurons or from different sense organs or receptors. These impulses are then transmitted through the cell body. The cell body contains a nucleus and different organelles which help the nerve cell to perform its functions. The nerve impulse is then transmitted to the axon.

The axon is an extension from the cell body. There are some cells called Schwan cells that secrete a myelin sheath to insulate the axon from the surrounding medium. The insulated axons have more ability to conduct the impulses than non-insulated axons. The axon ends with the terminal arborizations. The terminal arborizations of a nerve cell connect to the dendrites of the next cell or to the afferent organ. The gaps between the dendrites and the terminal arborizations are called the synapses.

The nerve impulse is an electrochemical phenomenon i.e. an electrical phenomenon with a chemical nature. The membrane of the axon acts as a barrier between an outside positively charged medium and an inside negatively charged medium. This makes a potential difference of  -70mV. This state is called the resting potential. When the membrane is subjected to a stimulus, the positive charges enter to inside and the negative charges exit to the outside. The potential difference now becomes +40mV. This state is called the depolarization state. The point of stimulation acts as a new stimulus for the next point and so on. The membrane sooner gains its permeability again and the positive charges return to the outside and the negative charges to inside. This state is called repolarization.

The nerve impulse reaches the synapse. There are some neurotransmitters that are excited by the nerve impulse coming and carry the message across the membrane. Some receptors receive theses neurotransmitters on the dendrites of the next neuron. These receptors act as a stimulus for the new cell.

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Application of autologous growth factors on skeletal muscle healing.

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Answer:

The correct match would be:

  1. Cerebrum – responsible for speech, emotion, and memory
  2. Cerebellum – responsible for muscle coordination and balance
  3. Brain stem – responsible for involuntary muscles like the heart

The brain can be divided into three main parts:

1. Cerebrum: It is the largest part of the brain. It can be divided into two halves termed as right and left hemisphere. It can also be divided into broad regions termed as lobes (frontal, parietal, temporal, and occipital lobe).

The main functions of the cerebrum include control of voluntary muscles, interpret information received from sensory receptors (touch, vision, hearing, vision), reasoning, learning, emotions, and speech.

2. Cerebellum: It is located below the occipital lobe in the back of the brain. The main function of the cerebellum is the coordination and precision of voluntary actions and the maintenance of posture and balance of the body.

3. Brain stem: It connects the brain with the spinal cord. It consists of the midbrain, pons, and medulla oblongata. It helps in controlling and coordinating involuntary movements like the heart, lungs, swallowing, breathing, sneezing et cetera.

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Periodontal diseases in teeth and osteoarthritis are common problems that show up on skeletal remains. a. True b. False

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Answer:

The correct answer is true

Explanation:

Enzymes bind specific chemical reactants known as substrates, in a specific chemical reaction. Enzymes have a unique cleft called active site that only permits specific substrates to bind to this active site.

Each enzyme has a unique shape that fits the specific substrate. It is like a hand and gloves and their specificity is similar to lock and key as a key fits only in it’s a specific lock.

Thus, the correct answer is true.

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Read the passage. Then, answer the question(s). A modern dentist would certainly enjoy having a hadrosaur as a client. Although an adult human being has only 32 teeth, these duck-billed dinosaurs of the Late Cretaceous Period had up to 2,000 teeth, with 500 along each side of each jaw. Unlike human beings, who grow two sets of teeth in their lifetimes, the hadrosaurs, like sharks and modern reptiles, had built-in replacement teeth. If a tooth became worn down or broke off, a new one would take its place. In skeletal remains of the jaws of these toothy beasts, scientists have found entire banks of replacement teeth. Like athletes sitting on the bench, they were ready and waiting to be put to use. Which statement or detail from the passage best helps readers picture a hadrosaur’s teeth?

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The correct answer is A. A tragedy has characters who suffer pain and loss, while a comedy has funny situations and a happy ending.

Explanation;

Both tragedy and comedy are genres of literature that commonly display fictional stories, character, and events; however, they differ in their focus and features. In the case of tragedy, this has a sad ending and the situations presented include mostly events that focus on suffering and difficult situations the characters are unable to overcome.

On the other hand, the comedy focuses on humor and entertaining situations, has a happy ending and aims at entertaining and making the audience laugh rather than making them feel bad about characters. According to this, the statement that shows the difference between tragedy and comedy is “A tragedy has characters who suffer pain and loss, while a comedy has funny situations and a happy ending”.

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What is the name of a contracting unit of skeletal muscle?

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What is the name of a contracting unit of skeletal muscle?

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PLZZ HELP FASSSSST 1. Which of the following eyects would you expect if red blood cells were shaped like neurons? (1 point) They would not be able to move as easily through capillaries. They would more easily carry out gas exchange in the alveoli. They would not need to be transported through the body. They would become more eyective at picking up urea discarded by body cells. 2. Which of the following is not a function of the skeletal system? (1 point) supports the body works with other body systems to allow movement manufactures new blood cells sends signals to the brain 3. Which of the following body systems are involved in the first line of defense of the immune system against infection? (1 point) integumentary, digestive, respiratory nervous, circulatory, skeletal muscular, endocrine, urinary urinary, skeletal, integumentary 4. Which of the following sets of structures would be involved in ridding the body of unwanted urea? (1 point) sensory neuron, interneuron, spinal cord alveoli, atrium, cilia capillary, nephron, ureter brain, esophagus, small intestine 5. An infectious disease is a disease that (1 point) is caught because the weather turns cold. is caused by pathogens. can be spread only by bacteria. cannot be cured. 6. Which of the following statements is true regarding infectious agents? (1 point) Infectious agents are all too small to be seen without a microscope, and none can be classified as living. All infectious agents are living because they are all classified as microorganisms. Of all the infectious agents, only viruses are considered living because they actively inject their DNA or RNA into host cells. Viruses cannot be treated with antibiotics because they are not living organisms. 7. Which discovery in the 1800s led to the development of germ theory? (1 point) Vaccines could prevent a disease. Antibiotics exist that can be given to counteract an infection. Infection rates decline when health care professionals wash their hands in between seeing patients. Some diseases, such as cancer, are caused by chemical factors. 8. Follow a carbon atom in a piece of bread eaten by a boy. Which of the following describes a path that this atom could take? (1 point) mouth esophagus stomach large intestine blood body cell mouth esophagus stomach small intestine blood body cell mouth large intestine esophagus stomach blood body cell mouth esophagus small intestine stomach blood body cell 9. Which of the following sets of structures is innervated by the somatic nervous system? (1 point) esophagus, stomach, small intestine atrium, ventricle, arteries biceps, triceps, quadriceps diaphragm, bladder, large intestine 10. Which of the following cell types would you expect to increase in number azer a person becomes infected with a pathogen? (1 point) sensory neurons white blood cells epidermal cells red blood cells

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There are four variables which govern changes in population size.
births
deaths
immigration
emigration

A population gains individuals by birth and immigration and loses individuals by death and emigration.

Biotic Potential
Populations vary in their capacity to grow. The maximum rate at which a
population can increase when resources are unlimited and environmental
conditions are ideal is termed the population’s biotic potential. Each
species will have a different biotic potential due to variations in
the species’ reproductive span (how long an individual is capable of reproducing)
the frequency of reproduction (how often an individual can reproduce)
“litter size” (how many offspring are born each time)
survival rate (how many offspring survive to reproductive age)

There are always limits to population growth in nature. Populations
cannot grow exponentially indefinitely. Exploding populations always
reach a size limit imposed by the shortage of one or more factors such
as water, space, and nutrients or by adverse conditions such as disease,
drought and temperature extremes. The factors which act jointly to
limit a population’s growth are termed the environmental resistance. The interplay of biotic potential and density-dependent environmental resistance keeps a population in balance.
Carrying Capacity
For a given region, carrying capacity is the maximum number of
individuals of a given species that an area’s resources can sustain
indefinitely without significantly depleting or degrading those
resources. Determining the carrying capacities for most organisms is
fairly straightforward. For humans carrying capacity is much more
complicated. The definition is expanded to include not degrading our
cultural and social environments and not harming the physical
environment in ways that would adversely affect future generations.

For populations which grow exponentially, growth starts out slowly,
enters a rapid growth phase and then levels off when the carrying
capacity for that species has been reached. The size of the population
then fluctuates slightly above or below the carrying capacity.
Reproductive lag time may cause the population to overshoot the carrying
capacity temporarily. Reproductive lag time is the time required for
the birth rate to decline and the death rate to increase in response to
resource limits. In this scenario, the population will suffer a crash
or dieback to a lower level near the carrying capacity unless a large
number of individuals can emigrate to an area with more favorable
conditions. An area’s carrying capacity is not static. The carrying
capacity may be lowered by resource destruction and degradation during
an overshoot period or extended through technological and social
changes.

An example of dieback occurred in Ireland after a fungus infection
destroyed the potato crop in 1845. During this potato famine
approximately 1 million people died and 3 million people emigrated to
other countries. Increased food production due to improved agricultural
practices, control of many diseases by modern medicine and the use of
energy to make historically uninhabitable areas of Earth inhabitable are
examples of things which can extend carrying capacity. The question is
how long will we be able to keep increasing our population on a planet
with finite size and resources?

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