What organ system is responsible for fluid balance, immunity, and lipid absorption, and defense against disease?
A. Nervous system
B. Respiratory system
C. Lymphatic system
D. Cardiovascular system
Answer: C
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Which is an accurate description of the posterior pituitary and its functions?
A. It is glandular tissue and secretes vasopressin and prolactin. B. It is neural tissue and is stimulated to secrete oxytocin and vasopressin by hypophysiotropic hormones. C. It is neural tissue that secretes hypophysiotropic hormones that control the secretion of the anterior pituitary hormones. D. It is glandular tissue and releases oxytocin and somatostatin when action potentials arrive along axons from the hypothalamus. E. It is neural tissue, and vesicles containing oxytocin and vasopressin are transported to axon terminals there.
Myofibrils within cardiac muscle cells are aligned in sarcomeres
Indicate whether this statement is true or false.
The influence of blood vessel diameter on peripheral resistance is ________.
A) the only factor that influences resistance B) significant because resistance is inversely proportional to the fourth power of the vessel radius C) significant because resistance is directly proportional to the blood vessel diameter D) insignificant because vessel diameter does not vary
Which of the following muscle types are myogenic?
a. cardiac muscle b. single-unit smooth muscle c. multi-unit smooth muscle d. Both a and b e. Both b and c