Fissures

Question 1

Name this Fissure and what it seperates

Answer 1

Longitudinal Fissure

—divides the cerebral hemisphers from one another,

creates a left and right side

Question 2

Name this fissure and what it seperates

Answer 2

Transverse Fissure

—Divides the cerebral hemisphers from the cerebellum

Question 3

Name this sulcus and what it seperates

Answer 3

Central Sulcus

—Divides each cerebral hemispher into a front and back

***runs opposite of longitudinal fissure

Question 4

What does the central sulcus divide? (3)

Answer 4

Divides:

1. ) Frontal Lobe from Parietal Lobe
2. ) Pre-Central Gyrus from Post-Central Gyrus
3. ) Primary motor corticies from primary sensory cortices

Question 5

Name this sulcus and what it seperates?

Answer 5

Lateral Sulcus

—Divides the Temporal Lobe from the Frontal & Parietal Lobe

Question 6

Identify this region

Answer 6

Paracentral Lobule

Question 7

Identify the sulcus and what it divides

Answer 7

Parieto occipital sulcus

—Divides Parietal and Occiptal lobe

Question 8

Identify the landmark “C” and explain its roll

Answer 8

Pre-occiptial Notch

—If an imaginary line is drawn from the Parieto-Occiptal sulcus to the Pre-Occiptial notch then the occiptal lobe can be seperated/distinguished from the parietal and temporal lobes

Question 9

Identify the following Sulcus and what it seperates

Answer 9

Calcarine Sulcus/Fissure

—Located on the medial surface of the occiptial lobe

• Divides the visual cortex into two
• Seperates Cuneus and Lingual Gyrus

Question 10

Identify the Sulcus

Answer 10

Cingulate Sulcus

—Midline Sulcus

Question 11

Identify the area

Answer 11

Corpus Callosum

—Large bundle of neural fibers that connects the left and right cerebral hemispheres

—Facilitates interhemispheric communication

Question 12

What is the Fornix and it’s purpose/location?

Answer 12

An arching, fibrous band of nerve fibers

It extends from the hippocampus to the mamillary body of the hypothalamus and forms an arch over the thalamus.

Answer 13

Anterior Commissure

—Connects the two temporal lobes of the cerebral hemisphers across the midline

Question 14

What/where is the Lamina Terminalis

Answer 14

A thin plate that passes upward from the optic chiasm to form the frontmost (rostral) wall of the third ventricle

Question 15

What is the Interventricular Foramen aka Foramen of Monro?

Answer 15

A structure that connects the paired lateral ventricles with the third ventricle at the midline of the brain.

—Allows for CSF to reach the third ventricle

Question 16

The Thalmus is affiliated with what Cranial Nerve?

Answer 16

CN II

Question 17

Name this area and it’s function

Answer 17

Thalmus

—Part of the diacephalon

—Surrounds the 3rd ventricle

–Main function is to relay motor and sensory signals to the cerebral cortex, it also regulates sleep, alertness and wakefulness

Question 18

What is the function of the Hypothalamus?

Answer 18

—Section of the brain responsible for hormone production.

***hormones produced by this area govern body temperature, thirst, hunger, sleep, circadian rhythm, moods, sex drive, and the release of other hormones in the body

Question 19

Where is the Hypothalamus located?

Answer 19

—Below the thalamus and right above the brain stem

—Forms the anterior part of the diencephalon

Question 20

Midbrain or mesencephalon is affiliated with what Cranial Nerve?

Answer 20

CN III, IV

Question 21

Where is the midbrain located and what is it’s function?

Answer 21

—-the most rostral part of the brainstem and sits above the pons and is adjoined rostrally to the thalamus

-Functions include the eye, auditory, and visual processing

Question 22

The pons are affiliated with what Cranial Nerves?

Answer 22

CN V, VI, VII

Question 23

The medulla is affiliated with what Cranial Nerves?

Answer 23

CN VIII, IX, X, XI, XII