BIOL 367 MIDTERM 1 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
Question:
1. 14,000 out of 20,000
Answer:
How many genes expressed in human brain?
Question:
2. What are the 2 classes of cells?
Answer:
neurons and glia
Question:
3. voltage-dependent and excitable
Answer:
List the traits of neurons (2)
Question:
4. voltage invariant and non-excitable
Answer:
List the traits of glial cells (2)
Question:
5. Do glial cells generate electricity?
Answer:
no
Question:
6. large negative membrane potential
Answer:
Do glial cells have a membrane potential?
Question:
7. neural electrical functions
Answer:
Glial cells have what functions, even if they do not generate electricity?
, Question:
8. continually replaced by precursors throughout adulthood
Answer:
What makes glial cells unique from other neurons in respect to replacement?
Question:
9. Modulate synaptic functions (transmitter
synthesis/recycling), brain metabolism, maintain
chemical homeostasis (K+, glucose), regulate blood flow
through capillary beds, “immune” type functions
(pruning), scaffold for neuronal migration during
development
Answer:
What are the 6 roles of glial cells?
Question:
10. shrimp giant fibers
Answer:
What is the fastest glial cells in all animals?
Question:
11. control the local ionic environment
Answer:
What do giant glial cells in leech ganglion do?
Question:
12. How fast can myelination increase conduction in invertebrate axons?
Answer:
200 m/sec
Question:
13. astrocytes, oligodendrocyte/Schwann cells, microglia,
ependymal cell (radial glia)
Answer:
What are the 4 non-neuronal cells of vertebrate brains?
Question:
14. yes, but not specialized or as common
Answer:
Do invertebrates have glial cells?
AND CORRECT ANSWERS
Question:
1. 14,000 out of 20,000
Answer:
How many genes expressed in human brain?
Question:
2. What are the 2 classes of cells?
Answer:
neurons and glia
Question:
3. voltage-dependent and excitable
Answer:
List the traits of neurons (2)
Question:
4. voltage invariant and non-excitable
Answer:
List the traits of glial cells (2)
Question:
5. Do glial cells generate electricity?
Answer:
no
Question:
6. large negative membrane potential
Answer:
Do glial cells have a membrane potential?
Question:
7. neural electrical functions
Answer:
Glial cells have what functions, even if they do not generate electricity?
, Question:
8. continually replaced by precursors throughout adulthood
Answer:
What makes glial cells unique from other neurons in respect to replacement?
Question:
9. Modulate synaptic functions (transmitter
synthesis/recycling), brain metabolism, maintain
chemical homeostasis (K+, glucose), regulate blood flow
through capillary beds, “immune” type functions
(pruning), scaffold for neuronal migration during
development
Answer:
What are the 6 roles of glial cells?
Question:
10. shrimp giant fibers
Answer:
What is the fastest glial cells in all animals?
Question:
11. control the local ionic environment
Answer:
What do giant glial cells in leech ganglion do?
Question:
12. How fast can myelination increase conduction in invertebrate axons?
Answer:
200 m/sec
Question:
13. astrocytes, oligodendrocyte/Schwann cells, microglia,
ependymal cell (radial glia)
Answer:
What are the 4 non-neuronal cells of vertebrate brains?
Question:
14. yes, but not specialized or as common
Answer:
Do invertebrates have glial cells?
