Which of the following indicates the direction of diffusion of gases at the alveoli of the lungs?
a) Oxygen into blood, Carbon dioxide into blood
b) Oxygen out of blood, Carbon dioxide into blood
c) Oxygen into blood, Carbon dioxide out of blood
d) Oxygen out of blood, Carbon dioxide out of blood
c
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Think about what your body does within a 24-hour period and name the life functions that take place.
What will be an ideal response?
Examples of adrenal gland short-term stress responses include immune system suppression and retention of salt and water by the kidneys
Indicate whether the statement is true or false
This is a figure of a skin wound. What does "D" represent?
A. Blood clot B. Blood vessel C. Subcutaneous adipose tissue D. Dermis E. Epidermis
Whole muscles can respond in a graded fashion to stimuli by varying
A. the force of contraction of individual muscle fibers. B. the frequency of stimulus. C. thresholds. D. the number of motor units recruited. E. the amplitude of the action potential.