Brain Anatomy Notebook Lab Notes

Question 1

Arbor Vitae

Answer 1

Arbor Vitae

“tree of life”; arrangement of white matter in the cerebellum that resembles a tree

Question 2

Cerebellum

Answer 2

Swelling posterior to cerebrum; center of balance and coordination of skeletal muscles

Question 3

Circle of Willis

Answer 3

Mass of blood vessels around the pituitary gland on underside surface of brain; these blood vessels provide nutrition to the brain

Question 4

Answer 4

(inferior)Colliculus

superior, and inferior-round swellings of the midbrain immediately anterior to cerebellum and superior to the pons

Question 5

Corpus callosum

Answer 5

C shaped mass of white fibers that connect the two halves of the brain

Question 6

Diencephalon

Answer 6

Name for the thalamus and hypothalamus together

Question 7

Answer 7

Fornix

Base of the corpus callosum

Question 8

Gray matter

Answer 8

Nervous tissue composed mainly of cell bodies of neurons

Question 9

gyrus(i)

Answer 9

raised area on surface of brain

Question 10

name the green portion

Answer 10

hypothalamus

inferior to the thalamus; has to do with homeostatsis-water balance, energy balance, appetite, thirst

Question 11

meninges

Answer 11

coverings over the CNS; three layers; pia on surface, arachnoid in middle, and dura mater, the tough outer layer

Question 12

name

Answer 12

Midbrain

called the mesencephalon; between the pons and diencephalon; some reflexes centerd here

Question 13

Answer 13

Olfactory Bulbs

found on anterior, ventral slide of the cerebrum are the center for the sense of smell

Question 14

Answer 14

optic nerve

nerve for each eyeball carrying impulses for the sense of sight

Question 15

optic chiasma

Answer 15

site of crossing of many of the fibers from the optic nerves

Question 16

optic tracts

Answer 16

extends from optic chiasma to brain; carry information from both eyes

Question 17

pineal body

Answer 17

this is sometimes called the pineal gland; it’s found immediately superior to the superior colliculus; functions as the biological clock, controlling the day-night cycle, biorythms, and menstrual cycle

Question 18

Answer 18

Pituitary gland

an endocrine gland that hangs below the hypothalamus; aka hypophysis

The pituitary gland is a pea-sized structure located at the base of the brain, just below the hypothalamus, to which it is attached via nerve fibers. It is part of the endocrine system and produces critical hormones, which are chemical substances that control various bodily functions.

Question 19

sulcus(i)

Answer 19

groove or depression on surface of the brain; long deep grooves are sometimes called fissures

Question 20

thalamus

Answer 20

relay center of sensory info

Question 21

ventricles

Answer 21

spaces inside the brain that contain fluid

Question 22

white mater

Answer 22

nervous tissue rich in myleinated axons

Question 23

choroid plexus

Answer 23

mass of blood vessels which produces CSF

Question 24

Answer 24

infundibulum

the hollow stalk that connects the hypothalamus and the posterior pituitary gland.

Question 25

Answer 25

Lateral Ventricle

each of the first and second ventricles in the center of each cerebral hemisphere of the brain.

Question 26

4th ventricle

Answer 26

The fourth ventricle contains cerebrospinal fluid. It has a diamond shape and is located in the upper portion of the medulla. … The main function of this ventricle is to protect the human brain from trauma (via a cushioning effect) and to help form the central canal, which runs the length of the spinal cord.