Ch. 11 Learnsmart Questions *Important*

How are cranial nerves named?

-by a number and by the function of the nerve - I-XII -24 total (12 pairs)

What are the three large branches of the trigeminal nerve.

1. Opthalmic division 2. Maxillary division 3. Mandibular division

Because sensory fibers of the peripheral nervous system cross over on their way to the cerebrum, centers in the right hemisphere interpret impulses originating from the left side of the body, and vice versa. However, two of the sensory areas receive impulses from both sides of the body. Which ones are they?

1. Sensory areas associated with hearing. 2. Sensory areas associated with vision.

Indicate the cranial nerve number for the olfactory nerve. A. Cranial Nerve I B. Cranial Nerve II C. Cranial Nerve III

A. Cranial Nerve I

Choose the effectors for the motor fibers of the trochlear nerve. A. extrinsic eye muscles which move the eyes B. Muscles of Facial Expression C. Muscles used for chewing

A. Extrinisic eye muscles which moves the eyes.

The simple neural pathway that mediates a reflex is called what? A. Reflex Arc B. Reflex Path C. Neuron D. Impulse Transmission

A. Reflex Arc.

Cervical nerves emerge from the vertebral column ______ the vertebrae they are named for and the thoracic, lumbar, and sacral exit ______ their corresponding vertebrae.

Above; Below

A reflex arc begins with a sensory receptor at the dendritic end of a(n) _______________

Afferent Neuron

Indicate the cranial nerve number for the trochlear nerve. A. Cranial Nerve III B. Cranial Nerve IV C.Cranial Nerve V D. Cranial Nerve VI

B. Cranial Nerve IV

What part of the nervous system is responsible for sensation and perception, issuing motor commands, personality, and regulating visceral activity?

Brain

Cranial nerves I and II are associated with the cerebrum while the remaining cranial nerves originate from the _________________

Brainstem

What do efferent neurons do?

Carry impulses from the CNS to muscles and glands (effectors)

The ______ is the part of the brain responsible for intelligence and personality.

Cerebral Cortex

What are the functions of the oculomotor nerve (CN III)?

Controls muscles of the pupil, to adjust the amount of light entering the eye. Controls muscles that move the eye. Controls muscles that raise the eyelid.

Because of the ______ of nerve fibers, the right side of the brain communicates with the left side of the body, and vice versa.

Crossing Over

he area of the brain called the ________________ is located between the cerebral hemispheres, superior to the brainstem, and surrounding the third ventricle.

Diencephalon

The nervous tissue that becomes the spinal cord leaves the cranium through the F __________ M________

Foramen Magnum

The diencephalon is located between the two cerebral_____________ and the _______________

Hemispheres Brainstem

Which are the functions of the spinal cord?

It conducts nerve impulses to and from the brain. It is a center for many reflexes.

Cranial nerve III is also called the __________ nerve

Oculomotor

The muscles that move the eyes and eyelids and the muscles that adjust pupil size and lens shape are innervated by the ____________nerve.

Oculomotor

The cranial nerves and spinal nerves make up the ______ nervous system.

Peripheral

The ____________nervous system consists of all the nerves that branch from the CNS, including the ______________ nerves and the spinal nerves.

Peripheral Cranial

The brainstem is composed of the midbrain the _________, and the _________ ________________.

Pons, and the Medulla Oblongata

The sensory areas of the cerebrum receive and interpret impulses from ______.

Receptors.

Which areas of the cerebrum function to receive input from receptors, producing sensations?

Sensory Areas

True or false: The cranial nerves serve parts of the head, neck, and also some structures of the trunk.

True

What is a nerve?

a cord of nerve fiber bundles bound together by connective tissue

All the basic components of a reflex are collectively known as a reflex __________

arc

In the most generalized way, nerves can be defined as bundles of ___________

axons

The neural centers and pathways that coordinate muscular movements are located in the ______.

brain

The brainstem connects the ______ to the ______.

brain and spinal cord

The brain is connected to the spinal cord by the ______________

brain stem

Most of the cranial nerves (cranial nerves III-XII), arise from what location?

brainstem

What do afferent neurons do?

carry sensory information to the CNS

Where are basal nuclei found?

cerebrum

What do interneurons do?

communicate between neurons or act as the processing center

The nervous system has twelve pairs of _________ nerves

cranial

The spinal cord ends near the intervertebral disc that separates the __________ and ________ lumbar vertebra.

first and second

The basal nuclei consist of ______.

gray matter

What area(s) of the body do cranial nerves innervate?

head, neck, some parts of the trunk

What describes the location of the cerebellum? Where are they located?

inferior to the occipital lobes of the cerebrum posterior to the pons and the medulla oblongata

What are some general functions of the brain?

issues motor commands perception of sensation regulates visceral activity

Which are the functions of the spinal cord?

it is a center for many reflexes it conducts nerve impulses to and from the brain

the cerebrum is the ____ part of the brain

largest

What are some functions of the cerebrum?

memory and storage intellect and reasoning interpretation of sensory signals initiation of voluntary movements

What are some parts of the brainstem?

midbrain and pons

Cranial nerve I is also called the _________ nerve

olfactory

The cranial nerve that is sensory only and transmits signals related to the sense of smell is called the _________________ nerve

olfactory

The name associated with the second pair of cranial nerves (II) is the _______ nerves

optic

Where is the cerebellum located?

posterior to pons and medulla oblongata

Where is the cerebellum located?

posterior to the pons and medulla oblongata

The spinal cord is a center for spinal __________ and conducts impulses to and from the brain.

reflexes

The thoracic, lumbar, and sacral spinal nerves are associated with (named for) the vertebra ___________ ____ the nerve's point of emergence from the vertebral column.

superior to

Cranial nerve V is also called the ____________ nerve

trigeminal

When a physician moves a finger in front of a patient's face, asking them to follow its movement with their eyes, they are testing the function of the ______ nerve.

trochlear

What areas of the body do spinal nerves innervate?

upper limbs lower limbs trunk

Where is the spinal cord located?

vertebral canal