The major means of decreasing heat loss in response to a cold environmental temperature is
a. skin vasoconstriction
b. skin vasodilation
c. increasing the temperature gradient between the skin and environment
d. formation of "goose bumps"
e. both a and d
A
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Answer the following statements true (T) or false (F)
1. The main structural unit of the cell membrane is the protein molecule. 2. Phospholipids and cholesterol are two lipid molecules found in the cell membrane. 3. Carbohydrate chains and protein molecules in the cell membrane are used as identification tags for the cell. 4. The nonliving material between the cell nucleus and cell membrane is called the cytoplasm. 5. The ribosomes are the “power plants” of the cells.
The overall functioning of the ANS contributes to
a. conservation of energy resources when stress levels are low b. mobilization of energy reserves when stress levels are high c. suppression of non-vital activities when stress levels are high d. homeostasis e. all of the above
Which of the following is true regarding systemic versus regional anatomy?
A. Systemic anatomy focuses on only one system at a time. B. Regional anatomy focuses on only one system at a time. C. Systemic anatomy focuses on several organ systems. D. Systemic anatomy focuses on several regions of the body.
A volleyball player jumps to spike the ball and feels a pop as she goes up. When she comes down, she has lost the ability to plantar flex her foot. Which structure has she likely injured?
A. Her anterior-lateral patellar retinaculum B. Her posterior cruciate ligament C. Her anterior cruciate ligament D. Her calcaneal (Achilles) tendon