gross brain lab

Question 1

1. Identify the circle of Willis as well as the major vessels leaving it

Answer 1

Haines 2-18 and 2-21

Question 2

Which areas of the brain are irrigated by the anterior cerebral artery

Answer 2

Medial regions of frontal and parietal lobes

Question 3

Which areas of the brain are irrigated by the middle cerebral artery

Answer 3

lateral regions of frontal, parietal and temporal lobes

Question 4

Which areas of the brain are irrigated by the posterior cerebral artery

Answer 4

medial regions of occipital and temporal lobes plus lateral occipital lobe

Question 5

3. Understand the venous drainage through the superior sagittal sinus and transverse sinus

Answer 5

superior sagittal sinus > confluence of sinuses > transverse sinus > sigmoid sinus > internal jugular vein

Question 6

4. Identify these blood vessels on cerebral angiograms

Answer 6

chapter 10

Question 7

5. Identify the major structural features of the Brain’s Lateral surface: central and lateral sulci, precentral and postcentral gyri, frontal lobe, parietal lobe, temporal lobe, parietooccipital sulcus

Answer 7

Chapter 2 (2-11, 2-5)

Question 8

Where is the primary motor and somatosensory cortex

Answer 8

Primary motor cortex: cortex in the pre-central gyrus (contains cell bodies of upper motor neurons that control muscles). Primary somatosensory cortex: cortex in the postcentral gyrus (receives touch, vibration and proprioception info)

Question 9

6. Identify the major structural features of the Brain’s ventral surface: Olfactory bulb, Gyrus rectus, Uncus, Optic nerve, Optic chiasm, Optic tract
7. Identify the major structural features of the Brain’s ventral surface: Olfactory bulb, Gyrus rectus, Uncus, Optic nerve, Optic chiasm, Optic tract

Answer 9

2-14, 2-17, 2-20

Question 10

What is the uncus

Answer 10

protrusion made by the underlying amygdala

Question 11

7. Identify the major structural features of the Brain’s medial (hemisected) surface: cingulate gyrus, calcarine sulcus, parietooccipital sulcus, corpus collosum (genu, body, splenium), anterior comissure, fornix, hypothalamus, thalamus, pineal gland, superior colliculus, inferior colliculus

Answer 11

2-26, 2-29, 2-30

Question 12

What is cingulate gyrus

Answer 12

part of limbic system

Question 13

what is calcarine sulcus

Answer 13

where primary visual cortex is located

Question 14

corpus collosum

Answer 14

carries axons that connect one hemisphere with the other

Question 15

the anterior comissure

Answer 15

carries axons that connect the temporal lobe on one side with its counterpart on the other

Question 16

fornix

Answer 16

an axon tract involved in the limbic system involved in memory formation and retrieval carrying information
from hippocampus to hypothalamusan axon tract involved in the limbic system involved in memory formation and retrieval carrying information
from hippocampus to hypothalamus

Question 17

hypothalamus

Answer 17

involved in regulation of homeostasis

Question 18

thalamus

Answer 18

where all sensory systems (except for olfaction) relay information on the way to cortex

Question 19

function of superior and inferior colliculus

Answer 19

superior colliculus is involved in coordinating auditory and visual maps of space; the inferior colliculus is part of the auditory system.

Question 20

8. Identify the cerebellar hemispheres, vermis, anterior and posterior lobes, flocculus and nodulus

Answer 20

2-37, 2-38

Question 21

9. Identify the lateral, third, and fourth ventricles, the foramina of Munro, Magendie, and Luschka, interventricular foramen, cerebral aqueduct, cisterna magna, interpeduncular cistern

Answer 21

4-6, 4-10, 4-11

Question 22

10. Locate the cisterna magna and interpeduncular cistern Describe the path of CSF flow through the ventricles into subarachnoid space. What happens if there is an obstruction to CSF flow?

Answer 22

Choroid plexus > lateral ventricle > interventricular foramen > third ventricle > cerebral aquaduct > fourth ventricle > foramen of luschka > subarachnoid space. Hydrocephalus

Question 23

On cross section, identify: Lateral ventricle and its parts (anterior horn, posterior horn, inferior horn), Superior, middle and inferior temporal gyri, Cingulate, occipitotemporal and parahippocampal gyri, Insula, Hippocampus, Fornix, Corpus callosum (and its parts)

Answer 23

ch 5

Question 24

On cross section, identify: Anterior commissure, Amygdala, Lenticular nucleus, and its two parts, the putamen and globus pallidus, Caudate nucleus, Thalamus and hypothalamus, Anterior and posterior limbs of the internal capsule, Third ventricle, Medulla, Pons, Midbrain

Answer 24

ch 5