Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

describe understanding the concepts of nervous system and its functions

1. describe the nervous system

a) monitors internal and external stimuli.

b) transmits information in the form of action potentials.

c) interprets or assesses information.

d) maintains homeostasis.

e) All of these choices are correct.

2. describe dendrites

1) Are the input part of the neuron?

b) Conduct action potentials away from the cell body.

c) are generally long and unbranched.

d) form synapses with the microglia

e) contain the trigger zone.

3. describe the blood-brain barrier

a) Permits passage of foreign substances from the blood to the neurons.

b) prohibits the transport of amino acids and glucose to the neurons.

c) prohibits the removal of waste materials from the neurons.

d) protects neurons from toxic substances in the blood.

e) does not prevent fluctuations in the composition of the blood from affecting the functions of the brain.

4. describe action potentials are conducted more rapidly when transmission is

a) from node to node on a myelinated axon.

b) on a small diameter axon.

c) on an unmyelinated axon.

d) from internode to internode.

e) from internode to node on a myelinated axon.

5. describe hyperpolarization

a) K+ ions tend to diffuse out of the cell.

b) the plasma membrane's permeability to K+ decreases.

c) the resting membrane potential moves closer to zero.

d) Na+ ions enter the cell in large numbers.

e) the resting membrane potential becomes more positive.

6. A stimulus either causes an action potential or it doesn't. This is called

a) an all-or-none response.

b) a graded response.

c) a latent period response.

d) a relative refractory response.

e) a local response.

7. describe the absolute refractory period assures

a) prolonged depolarization during the action potential.

b) completion of repolarization before another action potential.

c) that no after-potential occurs.

d) reversal of the direction of propagation of the action potential.

e) that the stimulus is strong enough to elicit a response.

8. describe Neurotransmitters are released from the

a) epineurium.

b) synaptic cleft.

c) presynaptic terminal.

d) postsynaptic membrane.

e) calcium channels.

9. describe when a neurotransmitter binds to its receptor and increases the permeability of the postsynaptic membrane to sodium ions,

a) the membrane will be hyperpolarized.

b) more chloride ions will also diffuse into the cell.

c) an excitatory postsynaptic potential (EPSP) will result.

d) the membrane will become impermeable to potassium ions.

e) the sodium ions diffuse out of the cell.

10. describe when two action potentials arrive simultaneously at two different presynaptic terminals that synapse with the same postsynaptic neuron,

a) the direction of the action potential is reversed.

b) temporal summation occurs.

c) spatial summation occurs.

d) hyperpolarization occurs.

e) threshold is never reached.

Biology, Academics

  • Category:- Biology
  • Reference No.:- M917572

Have any Question? 


Related Questions in Biology

Discuss the concept of risk and diversification and

Discuss the concept of risk and diversification and highlight types of risk correlation within portfolio with more than one asset?

Terminology cell division andgeneticswrite short

Terminology Cell Division andGenetics Write short definitions for each ( 1 or 2 sentences ) Sexual reproduction- Asexual reproduction- Centromere- Metacentric- Submetacentric- Telocentric- Chromatids- Karyotype- Centriol ...

Does the environment exert an influence on the phenotype

Does the environment exert an influence on the phenotype? What are some examples of phenotypical characteristics that present two or more varieties and of phenotypical features that do not vary? In relation to the genes ...

How does complementary base pairing facilitate dna

How does complementary base pairing facilitate DNA replication and the processes of transcription and translation? Identify the base pairs in each process.

Explain the influence of lifestyles socioeconomic status

Explain the influence of lifestyles, socioeconomic status, and disease management regarding the flu.

To investigate transformer tra gene expression during sex

To investigate transformer (tra) gene expression during sex determination in Drosophila, you perform in situ hybridization (FISH) and immunostaining. Fill in the table with the results you expect to observe following the ...

Assignment professional standards and institutional

Assignment: Professional Standards and Institutional Ethics In each case, answer the questions at the end of the case and give researched references to support your assertions; also, explain what would be the ethical cou ...

What is produced by inflation of the apex of the

What is produced by inflation of the apex of the conidospore and later the inflated apex is separated by a septum?

Knowing that acid rain has a ph of 2 - 3 would you conclude

Knowing that acid rain has a pH of 2 - 3 would you conclude that crop species with a narrow soil pH range are in trouble? Explain why, or why not, using scientific reasoning. Is acid rain a problem for plant species and ...

What is the relationship between the structure of a blood

What is the relationship between the structure of a blood vessel and blood pressure? What is the relationship between the structure of a blood vessel and blood velocity? Describe the pathway of urine from production to e ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen