anat-321 demonstrator lab1
TRANSCRIPT
![Page 1: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/1.jpg)
ANAT 321
REVIEW
LABORATORY 1
NEUROANATOMY LAB
![Page 2: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/2.jpg)
BRAINSTEM VENTRAL VIEW MIDBRAIN
medulla
pons
midbrain
![Page 3: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/3.jpg)
BRAINSTEM VENTRAL VIEW MIDBRAIN
medulla
pons
midbrain
Cerebral peduncleCN 3
CN 5CN 6
Pyramid
CN 9
CN 8CN 7
CN 10
Inferior olive
![Page 4: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/4.jpg)
REVIEW: LAB 1
• Question– What structure lies lateral to the
pyramids?
• Answer– The inferior olive
![Page 5: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/5.jpg)
REVIEW: LAB 1
• Question– What cranial nerve exits ventrally
between the cerebral peduncles?
• Answer– Cranial nerve 3
![Page 6: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/6.jpg)
BRAINSTEM DORSAL VIEW w/ out cerebellum
![Page 7: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/7.jpg)
BRAINSTEM DORSAL VIEW w/ out cerebellum
Superior colliculus
Middle cerebellar peduncle
Inferior cerebellar peduncle
Nucleus gracilis
Nucleus cuneatus
4th ventricle
inferior colliculus
![Page 8: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/8.jpg)
REVIEW: LAB 1
• Question– Which cranial nerve lies between the
pyramids and the inferior olives?
• Answer– CN 12
![Page 9: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/9.jpg)
REVIEW: LAB 1
• Question– What is the relationship between the
cerebral peduncles and the pyramids?
• Answer– The pyramids comprise the corticospinal
fibres which are a white matter fibre pathway originating in the motor cortices. The fibres course through the internal capsule and then funnel down into the cerebral peduncles and then through the medulla.
![Page 10: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/10.jpg)
REVIEW: LAB 1
• Question – Why are the cerebral peduncles
larger than the pyramids?
• Answer– There are more fibre tracts in
the cerebral peduncles
![Page 11: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/11.jpg)
REVIEW: LAB1
• Be sure that you understand the structure of the ventricular system in the medulla, pons, & midbrain
• Answer– Ventricles are spaces in
the brain filled with cerebral spinal fluid (CSF)
![Page 12: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/12.jpg)
REVIEW: LAB 1
– Ventricles are spaces in the brain filled with cerebral spinal fluid (CSF)
anteriorposterior
![Page 13: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/13.jpg)
REVIEW: LAB 1
• There are two lateral ventricles found in both cerebral hemispheres
Lateral ventricles
![Page 14: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/14.jpg)
REVIEW: LAB 1
• The walls of the third ventricle are formed by the thalamus
![Page 15: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/15.jpg)
REVIEW: LAB 1
• CSF flows from the third ventricle through the midbrain to the fourth ventricle by the cerebral aqueduct
![Page 16: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/16.jpg)
REVIEW: LAB 1
• The fourth ventricle is located dorsal to the pons and medulla
![Page 17: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/17.jpg)
REVIEW: LAB 1
• Be sure that you understand the relationship of the cerebellum to the 4th ventricle and to the medulla and pons.
• Answer– The cerebellum forms the
roof of the 4th ventricle
![Page 18: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/18.jpg)
REVIEW: LAB 1
• Be sure that you understand the relationship of the cerebellum to the 4th ventricle and to the medulla and pons.
• Answer– The cerebellum is attached to the
pons through the middle cerebellar peduncles and the medulla by the inferior cerebellar peduncles
![Page 19: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/19.jpg)
QUIZ
![Page 20: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/20.jpg)
A
B
C
D
![Page 21: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/21.jpg)
Answer Key
– A: cerebral peduncle– B: CN5– C:CN6– D: pyramid
![Page 22: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/22.jpg)
A
B
C
D
E
![Page 23: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/23.jpg)
Answer Key
– A: superior colliculus– B: inferior colliculus– C: middle cerebellar peduncle– D: nucleus gracilis– E: fourth ventricle
![Page 24: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/24.jpg)
A
B
C
D
E
![Page 25: ANAT-321 DEMONSTRATOR LAB1](https://reader035.vdocuments.net/reader035/viewer/2022062220/5560e1fdd8b42aa65e8b4cdd/html5/thumbnails/25.jpg)
Answer Key
– A: pons– B: CN8– C: CN12– D: inferior olive– E: CN7