The two components of the integumentary system are the
A) epidermis and dermis.
B) cutaneous membrane and hypodermis.
C) cutaneous membrane and accessory structures.
D) integument and hypodermis.
E) epidermis and superficial fascia.
C
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Surface area in the nasal cavity is increased by the presence of ________.
A. olfactory folds B. conchae C. microvilli D. choanae
The uterus usually lies above and tipped over the urinary bladder.
Answer the following statement true (T) or false (F)
Approximately how many olfactory receptors are within the human nose?
a. 5,000 b. 500,000 c. 1,000,000 d. 5,000,000 e. 50,000,000
Why are you able to repeatedly contract and relax your muscles of respiration, allowing you to breathe in and breathe out?
a. As soon as all of the Ca2+ stored in the lateral sacs of the sarcoplasmic reticulum is used up, muscle relaxation occurs. b. After the muscle cell becomes excited, acetylcholinesterase rapidly destroys acetylcholine. c. When there is no longer a local action potential in the muscle cell, Ca2+ is actively transported back into the lateral sacs of the sarcoplasmic reticulum, and muscle relaxation occurs. d. Both (b) and (c) above. e. All of these answers.