A&P I Chapter 13 ( Brain and Cranial nerves)

What are the gyri of the cerebrum?

ridges of tissue

Identify the cranial nerves that control the muscles that move the eyeball.

oculomotor trochlear abducens

functions of cerebrospinal fluid?

-Protects the brain against the shock of rapid head movements -provide nutrients to the cNS tissue

cerebellum

-maintaining posture and equilibrium and is attached to the brainstem posterior to the pons -integrates information about the position of the body's parts and sends out signals that coordinate skeletal muscle movements

basal nuclei

A group of functionally related nuclei within the cerebrum, diencephalon and midbrain

The glossopharyngeal (IX) nerve carries impulses to/from the following regions.

Carotid arteries Salivary glands Tonsils Pharynx

Identify functions of the facial nerve.

Controls muscles of facial expression Controls the lacrimal gland Controls salivary glands Transmits taste sensation

Hypogossal nerve

Controls muscles of the tongue and throat

facial nerve

Controls muscles that promote facial expression, controls secretions of salivary glands and transmits sensory information from the tongue

What are the effectors for the motor fibers of the abducens nerve?

Extrinsic muscle of the eye

identify the cranial nerve that is a mixed nerve that primarily carries motor impulses to muscles of the pharynx and salivary glands?

Glossopharyngeal (IX)

Identify the cranial nerves that transmit parasympathetic information

III- oculomotor IX- glossopharyngeal VII- facial X-vagus

Indicate the three large branches of the trigeminal nerve.

Mandibular division Maxillary division Ophthalmic division

Where in the brain are basal nuclei located?

Midbrain, Diencephalon, cerebrum

Identify the functions of the oculomotor nerve

Regulates the shape of the eye Controls many of the muscles that move the eyeball

What is the source(s) of sensory information conveyed via the sensory fibers of the facial nerve?

Taste receptors of anterior tongue

Trigeminal nerve.

Transmits cutaneous sensory information from facial region, tongue and eye as well as controls muscles of mastication

Glossopharyngeal nerve

Transmits taste sensation and controls muscles involved in swallowing and secretions of salivary glands

Which cranial nerve functions to sense touch, pain, and temperature on the upper and lower face and to transmit motor impulses needed for chewing?

Trigeminal

Identify the cranial nerve that is a mixed nerve that carries somatic motor impulses to muscles associated with speech and swallowing, and autonomic fibers transmit impulses to viscera of the thorax and abdomen?

Vagus (X)

Where does the vagus (X) nerve carries impulses to/from?

Viscera of the thorax Viscera of the abdomen Muscles associated with swallowing Muscles associated with speech

The lateral rectus, an extrinsic muscle of the eye, is innervated by the

abducens nerve

The cranial nerve that is a primarily motor nerve with two branches: the spinal branch and the cranial branch is the ______ nerve

accessory

Subthalamic nuclei are associate with

basal nuclei and controlling motor functions

Nerves designated by Roman numerals and by names that indicate their primary functions and/or the general distribution of the their fibers are

cranial nerves

The vestibular branch of cranial nerve VIII carries sensory impulses for the sense of_________ and the cochlear branch carries sensory impulses for the sense of

equilibrium or balance Blank 2: hearing or sound

The cranial nerve that controls muscles of facial expression, secretion of salivary glands, secretion of lacrimal glands and transmits taste sensation is the

facial nerve

taste receptors of anterior tongue are the source of sensory information conveyed via the sensory fibers of the

facial nerve

The oculomotor (III) nerve carries motor impulses to muscles that ______

focus the lenses adjust the amount of light entering the eyes move the eyes raise the eyelids

The cerebral cortex is a thin layer

gray matter

The hypothalamus is the most ______ portion of the ______.

inferior, diencephalon

the blood vessels that supply blood to the brain

internal carotid arteries and vertebral arteries

The group of structures in the brain involved with emotions and memory is the __

limbic system

reticular formation

network of fibers within the brainstem is a network of nerve fibers and associated islands of gray matter which acts to filter incoming signals and to arouse the cerebral cortex. It is not a distinct structure, but is diffusely arranged within the brainstem

The cranial nerve that controls many of the muscles that move the eyeball, constricts the pupils and promotes lens accommodation is the _____ nerve.

oculomotor

Which primarily motor nerve carries impulses to muscles that raise the eyelids, move the eyes, adjust the amount of light entering the eyes and focus the lenses?

oculomotor

the part of the epithalamus

pineal gland Habenula

The optic nerve contains only_____ and transmits impulses associated with the sense of______

sensory nerve vision or sight

The grooves (depressions) between the raised areas on the surface of the cerebrum are called __

sulci

What is the largest portion of the brain and is approximately 1200g in females and 1400g in males?

the Cerebrum

the cranial nerve that is can be involved in reflexes necessary to maintain homeostasis.

vagus nerve

The cavities in the brain that store cerebrospinal fluid are the

ventricles

The three purely sensory cranial nerves are the olfactory, optic and

vestibulocochlear nerve

Parasympathetic function

The function involved in the regulation of smooth muscle, cardiac muscle and glands

The superior and inferior alveolar nerves arise from which cranial nerve and supply sensation to the upper and lower jaws and teeth?

Trigeminal