Brain Lab

Question 1

Cerebrum

Answer 1

Front of brain
Largest part of brain
Separated into two hemispheres/four lobes

Question 2

Sulcus

Answer 2

Grooves dividing the gyri that make up the cerebrum

Question 3

Gyrus

Answer 3

The folds making up the cerebrum, separated by suclus

Question 4

Longitudinal cerebral fissure

Answer 4

Deep groove going down the center of the cerebrum, separating the left and right hemispheres

Question 5

Brain stemp

Answer 5

made up of midbrain, pons, and medulla oblongata

All of brain that isn’t cerebrum or cerebellum

Question 6

Midbrain

Answer 6

part of nervous system, has various features that are associated with vision, hearing, motor control, etc

Question 7

Cerebral Peduncle

Answer 7

part of midbrain
Structures at the front of the midbrain containing ascending and descending tracts running from the cerebrum to the pons
connects midbrain and pons to cerebrum

Question 8

Superior Colliculus

Answer 8

Feature of midbrain associated with visual attention, eye tracking, blinking, focusing, pupil dilation, etc

Question 9

Inferior Colliculus

Answer 9

Feature of midbrain that receives signals from the inner ear

handles noise reflexes (turning head to look at noise, jumping when startled by loud noise)

Question 10

Pons

Answer 10

Functions as sort of a relay station for signals between various parts of the brain
Found caudal to midbrain

Question 11

Medulla Oblongata

Answer 11

Found caudal to Pons

Controls various functions of autonomic nervous system such as breathing, heart rate, and digestion

Question 12

Cerebellum

Answer 12

Found caudal to occipital lobe of cerebrum
Associated with balance and voluntary muscle control
consists of right and left cerebellar hemispheres connected by vermis
surface gray matter, white in the middle

Question 13

Vermis

Answer 13

narrow bridge connecting the two cerebellar hemispheres

Question 14

Meninges

Answer 14

dura mater, arachnoid mater, and pia mater

protect brain and provide structural support for arteries and veins

Question 15

Dura mater

Answer 15

top layer, pressed closely against bone

Question 16

Arachnoid

Answer 16

middle layer, found covering brain

Question 17

Pia Mater

Answer 17

bottom layer, tightly following all grooves of brain. hard to see

Question 18

Pituitary Gland

Answer 18

secretes hormones controlling growth, blood pressure, metabolism, etc. found attached to hypothalamus

Question 19

CN VI Abducens

Answer 19

controls muscle that turns the eye laterally

Originates at inferior pons and terminates at lateral rectus muscle of the eye

Question 20

Corpus callosum

Answer 20

“C” shape in middle of brain

responsible for communication between two brain hemispheres

Question 21

Thalamus

Answer 21

Passes signals for taste, smell, hearing, equilibrium, vision to cerebral cortex. also serves as motor control by relaying signals from cerebllum to cerebrum and creating feedback loop. also involved in memory and emotional functions of limbic cystem

Question 22

Thalamus

Answer 22

Sorts and passes signals for taste, smell, hearing, equilibrium, vision to cerebral cortex
located below corpus callosum

Question 23

Hypothalamus

Answer 23

located below thalamus

major control center for endocrine and autonomic nervous systems

Question 24

Ventricles

Answer 24

top ventricles are lateral ventricles (one in each hemisphere)
cerebrospinalfluid travels through the ventricles
connects to third ventricle (below lateral ventricle) through interventricular foramen which then leads fourth ventricle(by cerebellum) through cerebral aqueduct before finally leading to central canal

Question 25

arbor vitae

Answer 25

branching white matter in cerebellum

Question 26

septum pellucidum

Answer 26

thin membrane separating the anterior horns of lateral ventricles

Question 27

septum pellucidum

Answer 27

thin membrane separating the anterior horns of lateral ventricles

Question 28

spinal cord

Answer 28

below medulla

white matter outside, gray inside

Question 29

Dorsal/ventral roots

Answer 29

feathered nerves leading from spinal cord

ventral is efferent motor root of spinal nerve, dorsal is afferent root