FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 4: Principles of Neural and Hormonal Communication

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 111

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following is not associated with the postreceptor events of hydrophilic hormones?

A) cyclic AMP.
B) protein kinase.
C) adenylate cyclase.
D) chromatin.
E) phosphorylated enzymes.

F) B) and E)
G) A) and D)

Correct Answer

verified

Show Answer

Question 112

Multiple Choice

Review LaterAdd Note

Review Later

The following question refers to comparative concentrations, permeabilities, and potentials under various circumstances. Indicate the relationship between the two items listed in each situation by filling the appropriate letter in the blank using the following answer code: -A. membrane potential at rest B. the potential of the same membrane when it is depolarized

A) A is greater than B.
B) B is greater than A.
C) A and B are equal.

D) A) and B)
E) A) and C)

Correct Answer

verified

Show Answer

Question 113

Short Answer

Review LaterAdd Note

MATCHING: ART The following questions refer to the accompanying diagram of an action potential. Segments of the action potential are labeled A-D. Match the letters to the corresponding statements below. -After hyperpolarization phase

Indicate which characteristic applies to classical neurotransmitters and neuropeptides using the following answer code: -released from axon terminal

A threshold potential is

When chemically-gated Na⁺ channels open

MATCHING Indicate the direction that the force in question tends to move the involved ion under the stated conditions by writing the appropriate letter in the blank, using the following answer code: -concentration gradient for K⁺ at the peak of an action potential

A given synapse is always excitatory or ____________________.

The nervous system exerts considerable control over the endocrine system, but hormones have no influence over the nervous system.

Use the answer code to answer the questions in this section: -Ion movement responsible for the rising phase of the action potential.

Compare and contrast the receptor and postreceptor events for lipophilic and hydrophilic hormones.

The relative refractory period occurs after the action potential is complete because of the

A neuron fires an impulse by the all-or-____________________ law.

Indicate whether an excitatory or inhibitory synapse is being described by filling in the blank using the following answer code: -a small hyperpolarization of the postsynaptic neuron

The following question refers to comparative concentrations, permeabilities, and potentials under various circumstances. Indicate the relationship between the two items listed in each situation by filling the appropriate letter in the blank using the following answer code: -A. concentration of K⁺ in the intracellular fluid of a nerve cell immediately before an action potential B. concentration of K⁺ in the intracellular fluid of a nerve cell immediately following an action potential (assume that the Na⁺-K⁺ pump has not yet acted)

The junction between two neurons is known as a(n) ____________________.

The ____________________ or ____________________ of a nerve cell is a single, elongated tubular process that conducts action potentials away from the cell body and eventually terminates at other cells.

A neurotransmitter may be excitatory at one synapse and inhibitory at another.

MATCHING Indicate the direction that the force in question tends to move the involved ion under the stated conditions by writing the appropriate letter in the blank, using the following answer code: -concentration gradient for Na⁺ at the end of an action potential

The falling phase of the action potential is due to