The Nervous System and Sense Organs Practice Test

The practice test in the fourth unit, The Nervous System and Sense Organs, in the course Animal Anatomy and Physiology 1 at Penn Foster College.

Which category would a sensory nerve fiber best fit into?

Afferent nerves

Where in the eye are photoreceptors located?

Retina

What type of cells make up the myelin sheath?

Schwann cells

The thalamus, hypothalamus, and pituitary gland are three components of which part of the brain?

Diencephalon

What's the function of synaptic vesicles?

Storing neurotransmitters

What's the function of saltatory conduction?

Speeds signal transmission along a neuron

Where are the utricle, saccule, and semicircular canals located?

Inner ear

What's the process of experiencing pain called?

Nociception

The nervous system can be divided into what two basic anatomic areas?

Central and peripheral nervous systems

What's the brachial plexus?

Group of several spinal nerves

What's the middle vascularized layer of the eye called?

Uvea

Where does neurotransmission typically take place?

At the synaptic cleft

What type of stimuli do taste buds detect?

Chemical

What's the primary difference between the autonomic and somatic nervous systems?

The autonomic system is involuntary, and the somatic system is voluntary.

What's the name for gaps in the myelin sheath on a myelinated neuron?

Nodes of Ranvier

Which of the following are general senses?

a) Touch

b) Visceral sensations

c) Taste

d) Hearing

e) Vision

f) Proprioception

a) Touch

b) Visceral sensations

f) Proprioception

Put the steps involved in hearing into the correct order, beginning with a sound being made.

1. Sound waves enter the pinna.

2. Sound waves vibrate the tympanic membrane.

3. Vibrations are transmitted through the malleus, incus, and stapes.

4. Vibrations are transmitted to the cochlea.

5. An electrical impulse is transmitted to the central nervous system.

Which of the following are cranial nerves?

a) Spinal

b) Trochlear

c) Brachial plexus

d) Oculomotor

e) Olfactory

f) Optic

b) Trochlear

d) Oculomotor

e) Olfactory

f) Optic

Perikaryon

Cell body where the nucleus is located

Dendrite

One of many cell receptors that senses the environment or receives signals from neighboring neurons

Axon

Cell projection that transmits signals to other neurons

Synaptic knob

Disk-shaped bulb at the axon terminal

Which of the following functions would the autonomic nervous system control?

a) Moving the legs to run

b) Turning the head to greet another animal

c) Heart beating

d) Breathing while asleep

e) Secreting digestive enzymes after a meal

c) Heart beating

d) Breathing while asleep

e) Secreting digestive enzymes after a meal