Which organ system is the location of blood cell production?
A. cardiovascular
B. skeletal
C. digestive
D. nervous
E. endocrine
B
You might also like to view...
During pregnancy, a woman's areolae and nipples become darker under the influence of
A. melanin from the pineal gland. B. vasopressin from the posterior pituitary gland. C. melanocyte-stimulating hormone from the placenta. D. estrogen and progesterone from the ovary.
Which of the following is NOT a mechanism of dissipating heat during exercise?
A) radiation B) convection C) conduction D) secretion of ADH E) evaporation
Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. This type of feedback mechanism best describes ________
A) negative feedback B) an abnormal physiological mechanism C) homeostatic imbalance D) positive feedback E) both negative and positive feedback
Which of the following statements concerning control of blood flow through arterioles is TRUE?
A. Beta-adrenergic receptors are more abundant on most arteriolar smooth muscle than are alpha-adrenergic receptors. B. Binding of epinephrine to alpha-adrenergic receptors causes vasodilation. C. Increased stimulation of vascular smooth muscle by the parasympathetic nervous system causes increased vasoconstriction. D. If the arterial blood pressure to an organ suddenly decreases, arterioles in the organ will dilate in response. E. Body-wide constriction of arterioles results in a decrease in the total peripheral resistance (TPR).