Below

Question

Exam
1 - The Autonomic Nervous System includes the parasympathetic and sympathetic divisions.

True

False
The parasympathetic nervous system is known to perform functions regarding “rest and digest.”

True

False

The sympathetic nervous system is known to perform functions regarding “fight or flight.”

True

False
A neuron consists of: [_________], dendrites, and axon.

A.
messenger service (neurotransmitters)

B.
cell body (soma)

C.
Lexus

D.
synaptic clefts
Which term describes the space between a neuron and its target cell?

A.
Axon terminal

B.
Post synaptic membrane

C.
Synaptic cleft

D.
Dendritic spine
Both chemical and electrical synapses relay information through similar mechanisms.

True

False
Action potentials ultimately result in more calcium leaving the target cell at the post synaptic membrane.

True

False

What channel plays a role in the release of neurotransmitters into the synaptic cleft?

A.
Voltage-gated potassium channels

B.
Voltage-gated sodium channels

C.
Voltage-gated calcium channels

D.
Both voltage-gated potassium and sodium channels

There are two main types of neurotransmitter receptors. Which of the following statements about receptors accurately describes how they function?

A.
Ionotropic neurotransmitter receptors move more slowly than metabotropic neurotransmitter receptors.

B.
Metabotropic neurotransmitter receptors move more slowly than ionotropic neurotransmitter receptors.

Branched nerve fibers that convey local potential changes toward the cell body of a neuron are called [____________________].

A.
Axons

B.
Dendrites

C.
Axon terminals

D.
Axon collaterals

Myelin sheaths on the outside of many axons in the peripheral nervous system are contributed by [____________________].

A.
Axons themselves

B.
Magic

C.
Schwann cells

D.
Cell bodies of the neuron

A neuron with many nerve fibers arising from its cell body is considered unipolar.

True

False
At resting potential, the ion distribution inside and outside of a neuron is such that __________ ions are most abundant on the outside of the cell, while __________ ions are most abundant on the inside of the cell. (2pts)

A.
calcium; magnesium

B.
sodium; potassium

C.
vitamin d; zinc

D.
multi; singular


Which term should not be grouped with the others?

A.
Brain

B.
CNS (Central Nervous System)

C.
PNS (Peripheral Nervous System)

D.
Spinal cord
Nerves impulses always travel to the brain through axon fibers.

True

False
Afferent neurons are sensory neurons that carry nerve impulses from sensory stimuli towards the central nervous system and brain.

True

False
Efferent neurons are motor neurons that carry neural impulses away from the central nervous system and towards muscles to cause movement.

True

False
Neurotransmitters are chemicals used to send a signal across the synaptic gap.

True

False
The spinal cord is not part of the CNS.

True

False