Answer the following statements true (T) or false (F)
1. Schwann cells produce myelin for neurons outside the central nervous system.
2. Nodes of Ranvier are indentations between Schwann cells.
3. One of the differences between white matter and gray matter is that gray matter has a myelin sheath.
4. Perineurium surrounds fascicle.
5. The tough outer fibrous sheath that covers the whole nerve is called the endoneurium.
1. TRUE
2. TRUE
3. FALSE
4. TRUE
5. FALSE
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Matching
A) Paget's disease B) Osteoporosis C) Osteomalacia 12) Bones are porous and thin but bone composition is normal. 13) Bone formed is poorly mineralized and soft. Deforms on weight bearing. 14) Excessive and haphazard bone deposit and resorption.
"Catabolism" refers to
A) chemical reactions that acquire energy. B) synthesis of large molecules. C) chemical reactions that release energy. D) the formation of genetic material.
In a feedback loop, the integrating center sends information to the ________.
sensor effector brain region thermostat
Steroid hormones do NOT bind to plasma membrane receptors.
a. true b. false