Which of the following factors that affect skin drag, can athletes usually alter?
A. roughness of the body surface
B. amount of surface area in contact with the fluid
C. viscosity of the fluid
D. both A and B
E. all of the above
D. both A and B
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Which type of epithelial tissue is found lining the heart, blood vessels and lymphatic vessels?
a) Simple squamous epithelium b) Simple cuboidal epithelium c) Stratified squamous epithelium d) Stratified cuboidal epithelium e) Simple columnar epithelium
Select the correct statement about male sexual response.
A) Sympathetic impulses are responsible for causing penile arteriolar dilation, resulting in erection. B) Erection is the result of vascular spaces in the erectile tissues filling with blood. C) Expansion of the penile tissues results in dilation of the venous outflow. D) Ejaculation is the result of parasympathetic stimulation.
The layer of serous membrane that covers the surface of the lungs is the
A) mediastinum. B) visceral pleura. C) surfactant. D) parietal pleura. E) pleural fluid.
What respiratory event occurs when intrapulmonary pressure is greater than atmospheric pressure?
A) exhalation B) ventilation C) inhalation D) Movement of air does not occur.