Nervous System

The sympathetic and parasympathetic nervous systems are subdivisions of the : a. autonomic nervous system b. voluntary nervous system c. somatic nervous system d. central nervous system e. peripheral nervous system

autonomic nervous system

In this part of a neuron, neurofilaments, actin microfilaments, and microtubules are particularly abundant, providing structural support and a transport network a. synapse b. axon terminal c. axon d. cell body e. dendrite

axon

This part of the neuron may have branching collaterals a. synapse b. axon terminal c. axon d. cell body e. dendrite

axon

This tends to be the longest cytoplasmic projection from a neuron a. synapse b. axon terminal c. axon d. cell body e. dendrite

axon

the myelin sheath wraps around the ________ of a neuron to provide protection and insulation a. soma b. axon c. dendrite d. nucleus

axon

The axon emerges from the soma at a thickened region called the _______ a. sarcoplasmic reticulum b. nissl bodies c. axon hillock d. synaptic vesicle

axon hillcock

The neuron cells is made up of which of the following parts? a. axon b. dendrite c. nucleus d. all of the above

a neuron cell is made up of axon, dendrite and nucleus, all of the above

Which of the following is the correct path an impulse takes across a synapse? a. axon of postsynaptic neuron, dendrite of presynaptic neuron, synaptic cleft b. dendrite of presynaptic neuron, synaptic cleft, axon of postsynaptic neuron c. axon of presynaptic neuron, synaptic cleft, dendrite of postsynaptic neuron d. synaptic cleft, dendrite of postynaptic neuron axon of presnaptic neuron

axon of presynaptic neuron, synaptic cleft, dendrite of postsynaptic neuron

Mitochondria are particularly abundant here a. synapse b. axon terminal c. axon d. cell body e. dendrite

axon terminal

The ________ of the presynaptic neuron associates with the dendrite of a postsynaptic neuron a. synapse b. axon terminal c. axon d. cell body e. dendrite

axon terminal

These regions of a neuron are also referred to as terminal boutons a. synapse b. axon terminal c. axon d. cell body e. dendrite

axon terminal

What is a neurotransmitter? a. acetylcholine b. myelin c. ranvier d. all of the above

acetylcholine

Types of neurons on basis of their function includes a. motor neurons b. interneuron c. sensory neurons d. all of the above

all of the above

The movement of materials from the soma to the synaptic terminal is called a. plasmolysis b. inactive trasport c. axonplasmic transport d. pinocytosis

axonplasmic transport

______________ send signals away from neurons whereas ______ receive signals from other neurons a. dendrites; axons b. axons; synapses c. synapses; dendrites d. axons; dendrites

axons; dendrites

The nervous system is divided into the ______ and the _______; the former consists of ______; the latter _______. a. cns; pns, the nerves around the body; the ventricles b. ans; cns; the nerves around the body; the brain and spinal cord c. cns; pns; the brain and spinal cord; the nerves around the body d. ans; pns; the nerves around the body; the ventricles

CNS; PNS; the brain and spinal cord; the nerves around the body

What is the function of the oligodendrocytes in CNS? a. create myelin layer b. clean up cellular debris c. supply blood and nutrients d. alert the body to an infection

Create myelin layer

Which relatively rare type of neuron has two processes extending from opposite sides of the cell body? a. bipolar b. multipolar c. pseudounipolar d. unipolar

bipolar

How do neurons communicate with each other? a. electrically b. chemically c. through weak, radio wave like impulses d. both a and b

both a and b

An axosomatic synapse occurs between the axon terminals of one neuron and the ________ of a proximal neuron. A) synapse B) axon terminal C) axon D) cell body E) dendrite

cell body

This is also called the soma of the neuron and has a single nucleus that is surrounded by cytoplasm a. nissl bodies b. cell body c. ganglion d. neurofibrils

cell body

This neuronal region transmits electrical impulses away from the cell body. a. synpase b. axon terminal c. axon d. cell body e. dendrite

cell body

This region of a neuron contains chromatophillic sunstance or Nissl bodies a. synapse b. axon terminal c. axon d. cell body e. dendrite

cell body

This region of the neuron contains a single nucleus surrounded by cytoplasm a. synpase b. axon terminal c. axon d. cell body e dendrite

cell body

Most synapses transmit communicating signals using A) chemical signaling molecules-neurotransmitters. B) electrical impulses travelling through gap junctions. C) physical contact between adjacent neurons. D) chemical signaling molecules released from neuroglia.

chemical signaling molecules- neurotransmitters

This is found in the cytoplasm and continually renews the membrane of the cell a. dendrite b. neurofibrils c. chromatophilic nissl bodies d. axon

chromatophilic nissl bodies

In an axodendritic synapse, the region of the postsynaptic neuron that binds the released neurotransmitter is the ________. a. synapse b. axon terminal c. axon d. cell body e. dendrite

dendrite

These regions of the neuron direct electrical currents towards the cell body a. synapse b. axon terminal c. axon d. cell body e. dendrite

dendrite

Which of the following are not glial cells of the cns? a. schwann cells b. astrocytes c. microglial cells d. ependymal cells

schwann cells

__________________ form myelin sheaths around axons of PNS a. the cell body b. neurofibrils c. nissl bodies d. schwann cells

schwann cells

Ciliated neuroglial cells that form an epithelium and play an active role in forming and moving cerebrospinal fluid are a. ependymal cells b. schwann cells c. oligodendrocytes d. astrocytes

ependymal cells

In human nervous system, supporting cells present with neurons are classified as a. dendrite cells b. malign cells c. benign cells d. glial cells

glial cells

The brains supporting cells are called a. neurons b. glial cells c. nuclei d. mitochondria

glial cells

Ganglia represent a. groups of axons b. groups of dendrites c. groups of neuron cell bodies d. groups of synapses

groups of neuron cell bodies

Neurons that interpret and receive information and stimulate motor neurons are a. sensory neurons b. motor neurons c. interneurons d. rotator neurons

interneurons

A node of ranvier (myelin sheath gap) a. occurs in ganglia b. is one segment of the myelin sheath c. occurs in the pns but not in the cns d. is a bare region of axonal membrane in the myelinated axons only

is a bare region of axonal membrane in the myelinated axons only

Which of the following is not part of a neuron? a. synaptic cleft b. dendrite c. lobe d. nucleaus

lobe

What is the name of the glial cells that act as phagocytes to aid in protecting cns neurons a. microglia b. astrocytes c. oligodendrocytes d. schwann cells

microglia

Which cells are macrophages of the cns? a. ependymal cells b. microglial cells c. satellite cells d. schwann cells

microglial cells

The majority of neurons in the body are a. multipolar b. bipolar c. unipolar d. psuedoumipolar

multipolar

White matter appears due to a. no blood supply b. myelin c. lack of nuclei d. electrical charges

myelin

The human nervous system is capable of a wide range of functions. What is the basic unit of the nervous system a. glial cell b. meninges c. neuron d. csf

neuron

This types of nervous tissue is excitable nerve cells that transmit electrical signals a. embryonic tissue b. neurons c. autonomic cells d. support cells

neurons

Gaps between the myelin sheath along an axon are called: a. dendrites b. chromatophilic substance c. astrocytes d. nodes of ranvier

nodes of ranvier

The spaces between the covered parts of an axon are called a. ventricles b. synaptic clefts c. nodes of ranvier d. vesicles

nodes of ranview

Which cells provide the myelin sheath for neurons in the cns? a . schwann cells b. astrocytes c. microglial cells d. oligodendrocytes

oligodendrocytes

Multipolar neurons have _________ a. one axon and several dendrite b.several axons and one dendrite c. no axons and several dendrite d. one axon and one dendrite

one axon and several dendrite

Interneurons are found a. only the the visceral nervous system b. only in the cns c. only in the pns d. only in the autonomic nervous system

only in the cns

These glial cells surround the cell bodies of sensory neurons within ganglia of the pns a. astrocytes b. microglia c. satellite cells d. podocytes

satellite cells

there are two types of glial cells found in the pns. Which of the following is found in the peripheral nervous system? a. ependymal cells b. satellite cells c. oligodendrocytes d. astrocytes

satellite cells

The difference between myelinated and unmyelinated axons is that a. schwann cells are not associated w unmyelinated axons b. schwann cells form more widely space nodes of ranvier in unmyelinated axons c. schwann cells simultaneously surround multiple axons in myelinated axons d. schwann cells wrap around myelinated axons in concentric layers

schwann cells wrap around myelinated axons in concentric layers

The skeletal muscles are controlled by the a. brain stem b. autonomic nervous system c. somatic nervous system d. cerebellum

somatic nervous system

Myelin on axon functions to a. make the axons live longer b. store nutrients for use by the neurons c. cover nodes of ranvier d. speed the rate of impulse conduction and insulate neighboring axons from one another

speed the rate of impulse conduction and insulate neighboring axons from on another

Chemical signals diffuse between neurons at this location a. synapse b. axon terminal c. axon d. cell body e. dendrite

synapse

This is the site of communication between neurons a. synpase b. axon terminal c. axon d. cell body e. dendrite

synapse

The point at which the terminal button and another neuron communicate is called ______; communication here is made possible by the release of ______. a. synapse; neurotransmitters b. synapse; hormones c. presynaptic membrane; neurotransmitters d. axon hillock; hormones

synapse; neurotransmitters

Which of the following is not a characteristic of a neuron? a. they have a high metabolic rate b. they do not divide c. they originate around the embryonic pharynx d. they have longevity

they originate around the embryonic pharynx