Q: Nervous System

Question 1

The afferent fibre that carries impulses to a neuron’s cell body is called a:

A) Neuron
B) Node of ranvier
C) Axon
D) Dendrite

Answer 1

D) Dendrite

Question 2

Axons tend to consist of:

A) Single processes
B) Several synapses
C) Multiple synapses
D) None of the above

Answer 2

A) Single processes

Question 3

The cerebrum consists of two major halves called:

A) Cerebellar hemispheres
B) Cerebral spheres
C) Cerebella spheres
D) Cerebral hemispheres

Answer 3

D) Cerebral hemispheres

Question 4

The cerebellum functions primarily as a centre of:

A) Visual activity
B) Associative reasoning
C) Auditory processing
D) Motor control

Answer 4

D) Motor control

Question 5

The myelin sheath is:

A) An insulating envelope that protects the nerve and facilitates transmission of nerve impulses
B) Bundles of nerve fibres
C) A branch like projection, extruding from the cel body of a nerve, known as the impulse conducting process of a neuron
D) Loose, connective tissue that surrounds several bundles of nerve fibres

Answer 5

A) An insulating envelope that protects the nerve and facilitates transmission of nerve impulses

Question 6

The part of the brain that contains the thalamus, pituitary gland, and the optic chiasm is the:

A) Diencephalon
B) Mesencephalon
C) Myelencephalon
D) Telencelephalon

Answer 6

A) Diencephalon

Question 7

How many pairs of spinal nerves are there?

A) 31
B) 1
C) 13
D) 61

Answer 7

A) 31

Question 8

Which spinal nerve area does not form a plexus?

A) Cervical
B) Lumbar
C) Sacral
D) Thoracic

Answer 8

D) Thoracic

Question 9

The divisions of the autonomic nervous system are:

A) Somatic and peripheral
B) Parasympathetic and peripheral
C) Sympathetic and parasympathetic
D) None of the above

Answer 9

C) Sympathetic and parasympathetic

Question 10

Efferent nerves…

A) Contain both afferent and efferent axons and conduct both incoming sensory information and outgoing muscle commands
B) Conduct signals from sensory neurons to the central nervous system
C) Conduct signals from the central nervous system along motor neurons to their target muscles and glands
D) None of the above

Answer 10

C) Conduct signals from the central nervous system along motor neurons to their target muscles and glands

Question 11

Neurons are sensors that send electric messages called:

A) Dendrites
B) Efferent nerves
C) Synapses
D) Nerve impulses

Answer 11

D) Nerve impulses

Question 12

Sensory neurons:

A) Are found exclusively within the central nervous system (CNS)
B) are nerves where the cell body is located within the spinal cord
C) Are an enclosed, cable-like bundle of sensory nerve fibres found within the peripheral nervous system (PNS)
D) All of the above

Answer 12

C) Are an enclosed, cable-like bundle of sensory nerve fibres found within the peripheral nervous system (PNS)

Question 13

Ventricles are:

A) A communicating network of cavities filled with cerebrospinal fluid
B) The stem-like part of the base of the brain that is connected to the spinal cord
C) Involved with regulating circadean rhythmns
D) The highest region of the brain

Answer 13

A) A communicating network of cavities filled with cerebrospinal fluid

Question 14

Ganglia cells often interconnect with other ganglia to form a complex system of ganglia, known as a:

A) Nerve cell
B) Dendrite
C) Brain stem
D) Plexus

Answer 14

D) Plexus

Question 15

The sympathetic division of the nervous system typically functions in actions requiring:

A) Quick responses
B) No response
C) Slow responses
D) No immediate reaction

Answer 15

A) Quick responses

Question 16

The autonomic nervous system:

A) Controls skeletal as well as external sensory organs
B) Controls involuntary muscles, such as smooth and cardiac muscles
C) Prepares the body for expending energy and dealing with emergency situations
D) None of the above

Answer 16

B) Controls involuntary muscles, such as smooth and cardiac muscles

Question 17

A function of the nervous system is to:

A) Controls peristalsis movement
B) Digest food
C) Transmit messages from one part of the body to another
D) All of the above

Answer 17

C) Transmit messages from one part of the body to another

Question 18

Bell’s Palsy is:

A Often associated with a lack of sugar in the diet
B) Another term for glandular fever
C) Because of a previous episode of shingles
D) A manifestation of Neuritis that includes loss of motion of the facial nerve bringing about the shortcoming of the muscles of one side of the face a failure to close one eye

Answer 18

D) A manifestation of Neuritis that includes loss of motion of the facial nerve bringing about the shortcoming of the muscles of one side of the face a failure to close one eye.

Question 19

An effect of sciatica is:

A) Pain felt down the back and external side of the thigh, leg and foot
B) Inflammation of the toes
C) Sudden jerking movements
D) Swollen wrists

Answer 19

A) Pain felt down the back and external side of the thigh, leg and foot

Question 20

The spinal cord serves as a conduit for signals between the _____ and the rest of the body

A) Brain
B) heart
C) Digestive system
D) Lymph

Answer 20

A) Brain