At what stage of development of RBCs does hemoglobin production begin?

A) stem cell
B) proerythroblast
C) reticulocyte
D) mature erythrocyte


Ans: B) proerythroblast

Anatomy & Physiology

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Antigens that induce an allergic reaction are called

a) lymphotoxin b) perforin c) granulysin d) interleukin-1 e) allergen

Anatomy & Physiology

Which of the following cranial nerves innervates only one muscle of the eyeball?

A. optic nerve B. facial nerve C. trochlear nerve D. trigeminal nerve E. oculomotor nerve

Anatomy & Physiology

Which term best describes the function of blood when considering the presence of leukocytes and antibodies?

A.  Regulation B.  Prevention C.  Protection D.  Transportation

Anatomy & Physiology

Which of the following parasites is visible to the naked eye?

a. roundworm c. hookworm b. whipworm d. coccidian

Anatomy & Physiology