Chapter 14: Brain and Cranial Nerves

60 terms by AjL10

Create a new folder

Advertisement Upgrade to remove ads

Cerebrum, Cerebellum, Brainstem

The three major parts of the brain

Cerebrum

Largest part of the brain associated with higher mental functions

Cerebellum

Second largest part of the brain that coordinates voluntary muscular activity

Diencephalon

Gives rise to the thalamus, hypothalamus, and the epithalamus

Brainstem

Part of the spinal cord that consists of the medulla oblongata, pons, and the midbrain. Also coordinates and regulates visceral activities.

Falx Cerebri

Seperates the two cerebral hemispheres

Falx Cerebelli

Seperates the two cerebellar hemispheres

Tentorium

Seperates the cerebrum from the cerebellum

Internal carotid

Arteries that carry blood to the brain

Internal jugular

Veins that return the blood from the brain

Blood-brain barrier

Protects brain from harmful substances

Brain stem

Helps maintain homeostasis and allows brain and spinal cord to communicate

Medulla oblongata, midbrain, reticular foramen, pons

The four parts of the brain stem

Medulla oblongata

Transmits all ascending and descending impulses

Cardiac Center

Controlls heart rate in the medulla oblongata

Vasomotor center

Controlls blood pressure in the medulla oblongata

Respitory center

Regulates the rhythm of breathing in the medulla oblongata

Midbrain

Short section of the brainstem between the diencephalon and the pons

Thalamus, hypothalamus, epithalamus

Parts of the diencephalon

Heart rate, arterial blood pressure, body temperature, water and electrolyte balance, hunger, body weight, movements and secretions of the GI tract, sleep and wakefulness, growth and reproduction

7 things the hypothalamus regulates

Epithalamus

Small region superior to the thalamus

Vermis

Connects the two hemispheres of the cerebellum

Arbor vitae

Cerebellar white matter

Corpus collosum

Deep bridge of nerve fibers that connect the two cerebral hemispheres

Frontal,Parietal, Temporal, Occipital

The 4 lobes of the cerebral hemispheres

Sulcus

Shallow groove

Fissure

Deep groove

Association fibers

transmit intrahemispheric impulses

Commissural fibers

Transmit interhemispheric impulses

Projection fibers

Transmit ascending and descending impulses

Frontal eye field

controls voluntary movements of the eyes and eyelids

reasoning, judjement, emotions, verbalizing ideas and storing memories

Funtions of the association areas

Basal ganglia

Masses of gray matter located deep within the cerebral hemishperes

Receiving and analyzing sensory imput

Function of the cerebral hemispheres

emotion,art,mental imagery (3D), music

Functions of the right cerebral hemisphere

Analytical problem solving, verbal

Functions of the left hemisphere

12

Number of cranial nerves

Sensory

Is the Olfactory nerve motor, mixed or a sensory nerve?

Sensory

Is the Optic nerve mixed, sensory, or a motor nerve?

Sense of smell

Function of the Olfactory nerve

Nerve of vision

Function of the Optic nerve

Motor

Is the Oculomotor nerve sensory, motor, or a mixed nerve?

Supply extrinsic eye muscles to control movement in the eyeball and upper eyelid

Function of the Oculomotor nerve.

Motor

Is the Trochlear nerve motor, mixed, or a sensory nerve?

Controlls movement of the eyeball

Function of the trochlear nerve

Mixed

Is the Trigeminal nerve a sensory, mixed, or motor nerve?

Motor

Is the Abductens nerve a motor, sensory, or mixed nerve?

Abduction of the eyeball

Function of the Abductens nerve

Mixed

Is the Facial nerve a motor, mixed, or sensory nerve?

Sensory

Is the Vestibulocohlear nerve a sensory, motor, or mixed nerve?

Vestibular

Branch that carried impulses for equilibruim

Chochlear

Branch that carries impulses for hearing

Mixed

Is the Glossopharyngeal nerve a mixed, motor, or sensory nerve?

Carry signals from the taste buds of the posterior one-third of the tongue

Function of the glossopharyngeal nerve

Mixed

Is the Vagus nerve a motor, sensory, or mixed nerve?

Swallowing and Vocalization

Functions of the Vagus nerve

Motor

Is the Accessory nerve a mixed, motor, or sensory nerve?

Supplies nerves to the sternocloidmastoid and trapezius muscles to coordinate head movements

Function of the Accessory nerve

Motor

Is the Hypoglossal nerve a motor, sensory, or mixed nerve?

Conducts impulses for speech and swallowing

Function of the Hypoglossal nerve

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set