lab: brain + eye

Question 1

source of cerebral spinal fluid

Answer 1

produced in the choroid plexuses of the ventricles of the brain

Question 2

function: longitudingal fissure

Answer 2

the deep groove that separates the two hemispheres of the vertebrate brain.

Question 3

gyri and sulci

Answer 3

a gyrus (pl. gyri) is a ridge on the cerebral cortex. It is generally surrounded by one or more sulci (depressions or furrows

remember: sulci, sad, depression

Question 4

cerebrum location + function

Answer 4

biggest chunk of brain.

responsible for all higher brain functions:

• speech
• memory
• reasoning
• emotions
• motor functions

Question 5

cerebellum function and location

Answer 5

provide smooth progression of movements

its the big, circular blob near the spinal cord

Question 6

point out where the medualla is on a brain and give its funciton

Answer 6

brainstem

The medulla oblongata helps regulate breathing, heart and blood vessel function, digestion, sneezing, and swallowing. This part of the brain is a center for respiration and circulation. Sensory and motor neurons (nerve cells) from the forebrain and midbrain travel through the medulla.

Question 7

point out hippocampus

Answer 7

Question 8

point out hypothalamus

Answer 8

Question 9

location and function: olfactory bulb

Answer 9

sends olfactory information to be further processed in the amygdala, the orbitofrontal cortex (OFC) and the hippocampus where it plays a role in emotion, memory and learning.

Question 10

optic nerve location and function

Answer 10

The job of the optic nerve is to transfer visual information from the retina to the vision centers of the brain via electrical impulses

Question 11

optic chiasma structure / function

Answer 11

the X-shaped structure formed at the point below the brain where the two optic nerves cross over each other.

Question 12

location mammillary body (sheep)

Answer 12

Question 13

pons location and function

Answer 13

bulb above the medulla

function:

This region of the brainstem includes neural pathways that conduct signals from the brain down to the cerebellum/medulla, and tracts that carry the sensory signals up into the thalamus.

The pons contains nuclei that relay signals from the forebrain to the cerebellum, along with nuclei that deal primarily with sleep, respiration, swallowing, bladder control, hearing, equilibrium, taste, eye movement, facial expressions, facial sensation, and posture.

Question 14

oculomotor nerve location

Answer 14

3rd cranial nerve after: olfactory, optic

Question 15

hypophysis (pituitary) location

Question 16

where would you find the superior colliculus?

Answer 16

next to the pineal body

Question 17

where would you find the fornix?

Answer 17

the space right under the corpus collusum (NOT inside, aka not the lateral ventricle) looks like a dark area with a lump (thalamus) under it