The contractile structure that surrounds the pupil is the
A. iris.
B. ciliary ring.
C. sclera.
D. ciliary muscle.
E. retina.
A
Anatomy & Physiology
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Renin hydrolyzes angiotensinogen, which is released from the ________, to form angiotensin I.
A. spleen B. heart C. liver D. kidneys E. lungs
Anatomy & Physiology
Class II MHC molecules are found _________.
A) only on granulocytes and macrophages. B) on all cells with a nucleus. C) only on liver cells and macrophages in the spleen. D) only on red blood cells. E) only on lymphocytes and macrophages.
Anatomy & Physiology
All capillary beds in the body are open all the time.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
Addition of phosphate groups to a particular molecule is catalyzed by ________.
A. phosphatases B. transaminases C. kinases D. isomerases
Anatomy & Physiology