The microfilament __________ is commonly used with its motor protein, __________
A) Actin; dynein
B) Nexin; dynein
C) Actin; myosin
D) Nexin; kinesin
Fill in the blank with correct words.
Answer: C
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The __________ node is the pacemaker of the heart.
Fill in the blank(s) with the appropriate word(s).
Posterior upper limb muscles are innervated by the
A) ulnar nerve. B) median nerve. C) axillary nerve. D) musculocutaneous nerve. E) radial nerve.
A single layer of irregularly shaped epithelial cells found lining the respiratory tract is called ________.
A. pseudostratified ciliated columnar epithelium B. transitional epithelium C. stratified cuboidal epithelium D. simple columnar epithelium
Where does starch (carbohydrate) digestion occur?
A. Mouth and stomach B. Mouth and small intestine C. Stomach and pancreas D. Stomach and small intestine