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

Expert Solution

A. A neuron is the basic unit of the nervous system and is a cell that carries electrical impulses. It receives and sends messages from the body to the brain and back to the body. The myelin sheath is a fatty covering that forms a protective sheath around some nerve fibers and dramatically speeds the transmission of nerve signals.

B. Dendrites receive electrochemical impulses from other neurons, and carry them inwards and towards the soma (cell body of the neuron), while axons carry the impulses away from the soma. Most neurons have multiple dendrites and only one axon.

C. The CNS consists of the brain and spinal cord, while the PNS includes all other nervous system tissue. All sensory receptors, sensory neurons and motor neurons are part of the PNS. The bones of the skull and spinal vertebrae encase all CNS neurons while in the PNS travel through or lie on top of muscle, organ and skin tissue.

D. Both PET scan and fMRI measure blood flow in the brain, which is an indirect measure of brain activity. PET scans are advantageous in that small movements do not impact the data while such movements can obscure and ruin fMRI data. At the same time, the resolution of the scans is superior in the case of fMRI.

Please post the other questions separately as we are supposed to answer just one question or four sub parts of a question.

Hayet Jeridi answered 11 months ago

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...

Compare and contrast the following terms: a) Centriole and centrosome b) Centrosome and Microtubule Organizin

Compare and contrast the following terms: a) Centriole and centrosome b) Centrosome and Microtubule Organizing Center (MTOC) c) Gamma tubulin ring complex and MTOC

a) Define and explain the following terms: Secured versus unsecured debt Senior versus subordinated debt b) Compare...

a) Define and explain the following terms: Secured versus unsecured debt Senior versus subordinated debt b) Compare 30-year bond to a 5-year bond all else equal. Which one is more sensitive to interest rate changes. Why? Please explain.

Compare and contrast plant versus fungal tissues.

Compare and contrast SYBR Green versus TaqMan?

Compare and contrast Hepatitis A, B, and C viruses in terms of structure, transmission, and infection...

Compare and contrast Hepatitis A, B, and C viruses in terms of structure, transmission, and infection prevention.

(a) In the space below, compare and contrast the terms 'epigenetic modification' and 'epigenetic inheritance'. (b)...

(a) In the space below, compare and contrast the terms 'epigenetic modification' and 'epigenetic inheritance'. (b) Can epigenetic inheritance be studied in a dividing unicellular eukaryote such as yeast? Why or why not? (c) Epigenetic modification of histones and epigenetic modification of DNA by DNA-methylation have some conceptual similarities as well as differences. For example, both have enzymes that can add or remove chemical modifications. Of the classes of DNA methylation enzymes below, circle the one that allows the pattern...

Compare hepatitis A, B, C, D, and E in terms of source of infection, incubation period,...

Compare hepatitis A, B, C, D, and E in terms of source of infection, incubation period, acute disease manifestations, development of chronic disease, and the carrier state.

Compare and contrast protein import into the mitochondria and nucleus. Include the following terms in the...

Compare and contrast protein import into the mitochondria and nucleus. Include the following terms in the way that shows you understand differences in the import mechanisms: (1) translocation mechanism, (2) signal sequences (whether the signal sequence is cleaved following import) and (3) state of protein folding (whether the proteins are in an unfolded or folded state during the import).

Compare and contrast the following macromolecules in terms of their structure, function, synthesis and significance to...

Compare and contrast the following macromolecules in terms of their structure, function, synthesis and significance to the cell: 1. proteins 2. carbohydrates 3. lipids 4. aromatic bases Which of the above could the cell survive longest without? Why?

Question