Define the complement system and describe the two ways in which it can be activated, then describe four ways that activated complement contributes to the body's defense
What will be an ideal response?
Complement refers to a group of proteins that, when activated, bring about direct destruction of foreign cells and enhancement of other body defenses. Complement activation by the classical pathway involves binding to an antigen that is bound to an antibody. The alternate pathway involves binding to an antigen directly. Once activated, complement can function in the following ways: (1) formation of membrane attack complexes that punch holes in the membranes of foreign cells; (2) serving as chemotaxins for white blood cells; (3) acting as opsonins; (4) promoting inflammation; and (5) activating kinins.
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A sweat gland is an example of a(n) ________ gland.
A. endocrine B. autocrine C. exocrine D. paracrine
Which of the following descriptions best fits the acid-base disorder respiratory alkalosis?
A) consequence of hyperventilation (for example, in fever or mental illness) B) consequence of prolonged vomiting C) consequence of reduced alveolar ventilation (for example, due to COPD) D) consequence of tissue hypoxia (for example, in ischemic conditions) E) consequence of strenuous exercise
In the process of ____________________-____________________, piglets are moved from one litter to another to balance litter size
Fill in the blank(s) with correct word
When growth hormone levels are low, which hormone stimulates its release?
A) growth hormone-releasing hormone (GHRH) B) prolactin-releasing hormone (PRH) C) somatostatin D) somatotropin