HBIO 301 CHAPTER 13 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE
What are the 5 structures in the 5 week old brain that eventually give rise to major
brain structures in adults?
Telencephalon (endbrain)
Diencephalon (throughbrain)
Mesencephalon (midbrain)
Metencephalon (after brain)
Myelencephalon (spinal cord)
What does the telencephalon become in the adult?
Cerebrum
Cerebral hemispheres
Lateral Ventricles
What does the diencephalon become in the adult?
Thalamus
Hypothalamus
Epithalamus
Retina
Third Ventricle
What does the mesencephalon become in the adult brain?
,Midbrain (Brain Stem)
Cerebral aqueduct
What does the metencephalon become in the adult brain?
Pons (Brain Stem)
Cerebellum
Fourth Ventricle
What does the myelencephalon become in the adult brain?
Medulla Oblongata (Brain Stem)
Spinal Cord
Central Canal
What are ventricles? What do they contain?
- Expansions of the brain's central cavity
- Ependymal cells and CSF
What are the ventricles continuous with?
Each other and spinal cord
What is the interventricular foramen?
Connects lateral ventricles to 3rd ventricle
What is the cerebral aqueduct?
Connects 3rd ventricle to 4th ventricle
Where are the lateral ventricles?
Cerebral hemispheres
Where is the 3rd ventricle?
Diencephalon
, Where is the 4th ventricle?
Hindbrain
Where is CSF produced? What is it composed of/contain?
- Choroid plexuses (in all 4 ventricles)
- Composed of ependymal cells and capillaries
- contains glucose, oxygen
What is CSF a product of? How much is produced/day? How much is present at
any one time?
- Filtrate of blood
- 500 ml produced/day
- 100-160 ml at any one time
What does CSF do?
Cushions brain, takes up wastes, circulates nutrients
What is the flow pattern of CSF?
1. Produced by choroid plexus
2. Flows through ventricles into subarachnoid space (some through central canal of
spinal cord)
3. Flows through subarachnoid space
4. Absorbed into the dural venous sinuses via arachnoid granulations
What reabsorbs CSF? Where is it reabsorbed?
- Arachnoid granulations
- Dural venous sinuses
What different things protect the brain?
WITH COMPLETE SOLUTIONS GRADED A++ LATEST UPDATE
What are the 5 structures in the 5 week old brain that eventually give rise to major
brain structures in adults?
Telencephalon (endbrain)
Diencephalon (throughbrain)
Mesencephalon (midbrain)
Metencephalon (after brain)
Myelencephalon (spinal cord)
What does the telencephalon become in the adult?
Cerebrum
Cerebral hemispheres
Lateral Ventricles
What does the diencephalon become in the adult?
Thalamus
Hypothalamus
Epithalamus
Retina
Third Ventricle
What does the mesencephalon become in the adult brain?
,Midbrain (Brain Stem)
Cerebral aqueduct
What does the metencephalon become in the adult brain?
Pons (Brain Stem)
Cerebellum
Fourth Ventricle
What does the myelencephalon become in the adult brain?
Medulla Oblongata (Brain Stem)
Spinal Cord
Central Canal
What are ventricles? What do they contain?
- Expansions of the brain's central cavity
- Ependymal cells and CSF
What are the ventricles continuous with?
Each other and spinal cord
What is the interventricular foramen?
Connects lateral ventricles to 3rd ventricle
What is the cerebral aqueduct?
Connects 3rd ventricle to 4th ventricle
Where are the lateral ventricles?
Cerebral hemispheres
Where is the 3rd ventricle?
Diencephalon
, Where is the 4th ventricle?
Hindbrain
Where is CSF produced? What is it composed of/contain?
- Choroid plexuses (in all 4 ventricles)
- Composed of ependymal cells and capillaries
- contains glucose, oxygen
What is CSF a product of? How much is produced/day? How much is present at
any one time?
- Filtrate of blood
- 500 ml produced/day
- 100-160 ml at any one time
What does CSF do?
Cushions brain, takes up wastes, circulates nutrients
What is the flow pattern of CSF?
1. Produced by choroid plexus
2. Flows through ventricles into subarachnoid space (some through central canal of
spinal cord)
3. Flows through subarachnoid space
4. Absorbed into the dural venous sinuses via arachnoid granulations
What reabsorbs CSF? Where is it reabsorbed?
- Arachnoid granulations
- Dural venous sinuses
What different things protect the brain?
