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ANATOMY & PHYSIOLOGY LAB 201A QUIZ #4 (EXERCISES 15, 17, 19 & PEx 2, 3)
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ANATOMY & PHYSIOLOGY LAB 201A QUIZ #4 IT COVERS EXERCISES 15, 17, 19 & PEx 2, 3 IN TXTBOOK
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ANATOMY & PHYSIOLOGY LAB 201AQUIZ #4
EXERCISES 15, 17, 19 & PEx 2, 3
1. If the response to a stimulus is a change rom a negative potential to a more positive
potential it is called depolarization.
True
2. Neuroglia are capable of generating an electrical signal.
False
3. When weak muscle contraction occurs each motor unit still develops maximum tension
even though fewer motor units are activated.
True
4. The uppermost region of the brainstem is a large cauliflower-like shaped structure
known as the cerebellum.
False
5. Deep grooves within the cerebral hemispheres are known as gyri.
False
6. The sciatic nerve divides into the fibular and common tibial nerves.
False
7. What are the connective tissue layers that protect the brain and spinal cord called? What
is the outermost of these layers named?
Meninges and outermost layer is dura mater.
8. Which cranial nerves are involved in rolling of the eyes?
Oculomotor nerve
Trochlear (IV)
Abducens (VI)
9. Relatively speaking, which one of these structures is much smaller in the sheep brain
compared with the human brain?
(A) Cerebellum
(B) Brain stem
(C) Cerebrum
(D) Pineal gland
10. The smallest stimulus required to induce an action potential in a muscle fiber’s plasma
membrane is called the __________.
(A) Maximal voltage
(B) Stimulus voltage
(C) Strong voltage
(D) Threshold voltage
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