An adaptive defense mechanism is always activated by __________.
a. inflammation
b. an antibody
c. fever
d. an antigen
Ans: d. an antigen
Anatomy & Physiology
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The primary electrolyte (ion) in the extracellular fluid is
a. calcium b. chloride c. phosphate d. potassium e. sodium
Anatomy & Physiology
Which structure forms the floor and part of the walls of the third ventricle?
A) Pituitary gland B) Epithalamus C) Midbrain D) Hypothalamus E) Thalamus
Anatomy & Physiology
Which of the following is not a process in urine formation?
A. Excretion B. Filtration C. Reabsorption D. Secretion
Anatomy & Physiology
The plasma membrane:
a. is composed mostly of lipid molecules b. is composed mostly of protein molecules c. allows the ICF and ECF to easily exchange materials d. is a barrier that prevents most molecules from passing through e. is a very thick structure relative to the size of the cell
Anatomy & Physiology