Frequency of sexual intercourse varies considerably across societies. Most societies:
A. encourage people to indulge in a variety of sexual activities.
B. have restrictions against intercourse at certain times or in certain situations.
C. encourage individuals to have sexual intercourse as frequently as possible.
D. discourage married couples from having sexual intercourse on a regular basis
B. have restrictions against intercourse at certain times or in certain situations.
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The organ that is connected to the hypothalamus by neurons is the
A) Anterior pituitary. B) Posterior pituitary. C) Adenohypophysis. D) Thyroid.
Label L represents which structure(s)?
A) mucosal glands
B) mucosa
C) villi
D) mucous epithelium
E) lamina propria
What part of the following description is INCORRECT? Contraction of the diaphragm and external intercostal muscles leads to increased volume in the thoracic cavity and the lungs. The increase in volume leads to an increase in intrapulmonary pressure
causing air to move into the lungs. A) Increased volume and decreased pressure cause air to leave the lungs, rather than enter the lungs. B) Increases in volume lead to a decrease in pressure, not an increase in pressure. C) The relaxation, not contraction, of the diaphragm and external intercostal muscles leads to inhalation. D) The contraction of the diaphragm and external intercostal muscles leads to a decrease in volume, not an increase in volume.
The respiratory pump assists blood movement within the veins of the trunk, because as a person inspires,
A. intra-abdominal and intrathoracic pressure both increase. B. intra-abdominal and intrathoracic pressure both decrease. C. intra-abdominal pressure increases and intrathoracic pressure decreases. D. intra-abdominal pressure decreases and intrathoracic pressure increases.