Which lymphoid organ has sinuses filled with blood instead of lymph?
What will be an ideal response?
spleen
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If individuals 4 and 7 have a child, what is the probability that the child will exhibit the trait?
Above is a pedigree for a common human trait (not a disease) controlled by a single gene. Shaded symbols are for individuals exhibiting the trait.
A) 1/4
B) 1/2
C) 1/6
D) 2/3
E) 0
Hemoglobin
a. tends to give up oxygen in regions where partial pressure of oxygen exceeds that in the lungs. b. tends to hold onto oxygen when the pH of the blood drops. c. tends to release oxygen where the temperature is lower. d. releases oxygen more readily in highly active tissues. e. may bind up to 16 molecules of oxygen.
Female sexual arousal causes the vagina and area around the labia to
A) constrict. B) secrete lubricants for penis insertion. C) release hormones to intensify intercourse. D) inhibit the plateau phase of the sexual response. E) stimulate ovulation.
Epithelial tissues are attached to the underlying tissue by a noncellular protein layer called the ________ membrane
Fill in the blank(s) with correct word