Explain why observations of basal body temperature are useful for couples who want to get pregnant, but are only of limited use for couples who are trying to avoid getting pregnant.
What will be an ideal response?
The hormone, progesterone, is released after ovulation and is associated with a rise in body temperature. The slight rise in body temperature is evidence that a woman has already ovulated, and the elevation remains until the beginning of the next menstrual cycle. Couples who are trying to avoid getting pregnant cannot use the lower temperature as an indication that ovulation has not occurred because the temperature elevation is not immediate, and furthermore they must understand that sperm survive for several days in the female reproductive tract.
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Which of the following changes does not occur at birth when an infant takes his or her first breaths?
A) Blood flow to the lungs decreases. B) The resistance in the pulmonary arteries decreases. C) Changes in blood flow cause the foramen ovale to close. D) Air enters the alveoli. E) Gas diffuses across the alveolar-capillary membrane.
Vascular injury following trauma to the anterior neck would MOST likely present with:
A) hemoptysis. B) parasthesia. C) pulse deficits. D) dysphagia.
The choroid
a. contains rods and cones. b. is a fluid within the eye. c. is also known as the blind spot. d. is the middle layer of the eye. e. refracts light rays.
Jasmine trips and tries to break her fall by putting her hand to the ground. The doctor informs her she has injured the ________ joints in her wrist.
A. metacarpophalangeal B. costocarpal C. intercarpal D. intermetacarpal