The intestinal feature responsible for increasing the absorptive surface area the most are
a. circular folds
b. villi
c. microvilli
d. crypts
e. none of the above
C
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Together, the inflation and deflation reflexes are known as the ________ reflexes.
A) red herring B) Hering-Breuer C) Breuer-Shipley D) chemoreceptor E) vagal
A 21-year-old man developed a hernia after lifting heavy boxes while moving into his new house. During the repair of his resulting hernia, the urologist recalls that the genitofemoral nerve:
(A) Runs in front of the quadratus lumborum (B) Is a branch of the femoral nerve (C) Supplies the testis (D) Passes through the deep inguinal ring (E) Gives rise to an anterior scrotal branch
The actions of thyroid hormones in stimulating body growth are permissive to the actions of growth hormone.
Answer the following statement true (T) or false (F)
Changes in the immune system that accompany aging include
A) T cells becoming less responsive to antigens. B) more cytotoxic T cells responding to infections. C) increased numbers of T helper cells. D) higher levels of antibodies after initial exposure to antigens. E) enlargement of the thymus and increased levels of circulating thymic hormones.