Which spinal curvature develops as an infant begins to hold up his or her head?
a. lumbar
b. thoracic
c. cervical
d. sacral
Answer: c. cervical
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In the photomicrograph of a portion of thick skin shown below, which layer is the stratum basale?
a) A b) B c) D d) E e) F
The vagina
A) serves as a passageway for the elimination of menstrual fluids. B) is homologous to the male scrotum. C) is normally bacteria-free and has a neutral pH. D) forms the upper portion of the birth canal. E) is lined by an endometrium that regenerates after each menstrual cycle.
Wetting the oral mucosa and stretching the digestive tract will cause ________ in thirst sensations.
A. a temporary interruption B. a tremendous increase C. an increase in blood osmolarity and a decrease D. an increase in blood osmolarity and an increase
Neutrons are uncharged particles found in the nucleus of an atom.
Answer the following statement true (T) or false (F)