Which of the following is NOT one of the three layers of tissue that forms the eyeball?
A. Conjunctiva
B. Sclera
C. Choroid
D. Retina
Answer: A
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Which cell secretes surfactant?
a) A b) B c) C d) D e) None of these choices
Pacemaker activity refers to spontaneous depolarizations resulting from
a. shifts in passive ionic fluxes accompanying b. cyclical changes in Na+-K+ pump activity c. automatic changes in channel permeability d. both a and b e. both a and c
Which muscle, that originates on the acromion process of the scapula and inserts on the proximal end of the humerus, functions to flex the forelimb and rotate it laterally?
A) levator scapulae ventralis B) clavodeltoid C) acromiotrapezius D) latissimus dorsi E) acromiodeltoid
Which vitamins are liberated by bacterial action and absorbed in the large intestine?
a. vitamins C, D, and E b. biotin, pantothenic acid, and vitamin K c. thiamin, riboflavin, and niacin d. vitamins A, D, E, and K