6. The part of a PNS neuron that is involved in production of the myelin sheath...

6. The part of a PNS neuron that is involved in production of the myelin sheath is the

(A) cell body (B) dendrite (C) axon (D) Schwan cell (E) oligodendrocyte.

7. If the sympathetic nerves are stimulated,

(A) heart rate is decreased (B) breathing decreases (C) digestive activity decreases (D) blood pressure is decreased (E) none of the above.

8. A deficiency of neurotransmitters is associated with

(A) meningitis (B) depression (C) Alzheimer’s disease (D) multiple sclerosis (E) none of the above. (circle all that apply: 2 answers could ‘work’ here)

9. Which of the following is not a mechanoreceptor

(A) taste bud (B) Meissner’s corpuscle (C) Pacinian corpuscle (D) pain receptor (E) Organ of Corti.

10. Which of the following is not an endocrine gland?

(A) pineal gland (B) pituitary gland (C) thyroid gland (D) sweat gland (E) thymus gland (F) adrenal gland.

11. The ‘master gland’ is the:

(A) anterior pituitary (B) pineal (C) posterior pituitary (D) thyroid (E) thymus (F) adrenal.

12. Endocrine disrupting chemicals can affect the body by:

(A) increasing secretion of natural hormones (B) decreasing secretion of natural hormones (C) mimicking natural hormones (D) interfering with the function of natural hormones (D) any of the above.

Expert Solution

gladiator answered 2 years ago

Compare and contrast the following terms a. neuron versus myelin sheath b. dendrite versus axion e....

Compare and contrast the following terms a. neuron versus myelin sheath b. dendrite versus axion e. action potential versus neurotransmitters c. CNS versus the PNS f. insomnia versus sleep apnea d. PET versus fMRI e. action potential versus neurotransmitters f. insomnia versus sleep apnea

Consider a myelinated nerve with axon of radius, a = 10 micrometers, and Myelin sheath of...

Consider a myelinated nerve with axon of radius, a = 10 micrometers, and Myelin sheath of thickness b = 0.4a. A) Calculate the space constant. B) Assume that a potential change of ∆V = 10mV is required to initiate an action potential, and that the distance between two nodes of Ranvier is D = 200a. If the maximum potential change is ∆V = 100mV, how many nodes of Ranvier can be triggered the specific values are right in the question...

Multiple sclerosis is a type of disease where myelin sheath of nerve cells in the brain...

Multiple sclerosis is a type of disease where myelin sheath of nerve cells in the brain and spinal cord are damaged. This damage disrupts the ability of parts of the nervous system to transmit signals, resulting in a range of signs and symptoms, including physical, mental, and sometimes psychiatric problems. Specific symptoms can include double vision, blindness in one eye, muscle weakness, and trouble with sensation or coordination. If Nerve a is a neuron in Patient A’s and nerve B...

The thickness of a single membrane is about 7 nm. A myelin sheath consists of multiple...

The thickness of a single membrane is about 7 nm. A myelin sheath consists of multiple membranes produced by coils of Schwann cell or oligodendroglia cells. Suppose a myelin sheath results from 100 membranes stacked on top of each other. A) What is the specific capacitance of the myelin? B) If the myelin sheath is a right circular cylinder 1 mm long, what is its total capacitance? C) How much charge does it take to produce a voltage of -70...

how gene Gpr56 could be used to develop new treatment for myelin sheath disorders?

1-Which part of the neuron contains the nucleus? A_Axon B_Myelin sheath C_Dendrite D-Soma 2_The “pleasure center”...

1-Which part of the neuron contains the nucleus? A_Axon B_Myelin sheath C_Dendrite D-Soma 2_The “pleasure center” which governs emotions, fear, and aggressions is called the A_Limbic system B_Frontal lobe C_CNS D_Parietal lobe 3-Which of the following is the proper order of the postsynaptic potentials? A-Synthesis, release, binding, inactivation/removal, reuptake B-Release, binding, reuptake, synthesis, inactivation/removal C-Reuptake, binding, synthesis, release, inactivation/removal D-Inactivation/removal, release, reuptake, binding, synthesis 4-The somatic nervous system involves _____ processes and the autonomic nervous system involves ______ processes. Voluntary;...

Which statement is true about multiple sclerosis? (Select all that apply). a. The myelin sheath covering...

Which statement is true about multiple sclerosis? (Select all that apply). a. The myelin sheath covering the nerves is destroyed b. It is marked by remissions and exacerbations c. It can affect adults 20 - 50 years of age d. It is relatively easy to diagnose e. The course of the disease is very predictable

True false questions Neuron cell bodies are only found in CNS but not in PNS, while...

True false questions Neuron cell bodies are only found in CNS but not in PNS, while axons are the opposite. True False If the threshold for AP is set at -60mV, a neuron receives total 8 EPSPs of -65mV and 6 IPSPs of -75mV, after the summation, this neuron will launch an AP. True False Sodium-potassium exchange pump is the key factor in maintaining the concentration gradients of the cations across the plasma membrane. True False The resting potential, -70mV, being close to...

Electron micrographs of human nerve fibers show 10-15 layers of membranous myelin sheath. Upon close examination,...

Electron micrographs of human nerve fibers show 10-15 layers of membranous myelin sheath. Upon close examination, these membranes are particularly rich in sphingolipids specially the glycosphingolipids. What could be the reason why these types of lipids abound in human myelin?

How specifically is the spinal cord, CNS, and PNS involved in the process of learning a...

How specifically is the spinal cord, CNS, and PNS involved in the process of learning a new language? What function do the parasympathetic, sympathetic, autonomic, and somatic nervous systems have in learning a new language?

Question