This figure shows a renal corpuscle. What structure does number 1 indicate?
A. Afferent arteriole
B. Efferent arteriole
C. Proximal convoluted tubule
D. Glomerulus
E. Distal convoluted tubule
Answer: B
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A ________ allele is expressed only when homozygous
A) homologous B) homocentric C) recessive D) maternal E) dominant
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.
What types of phagocytic cells are present in connective tissue proper?
A) neuroglial cells B) fixed and free macrophages C) fixed and free macrophages, neutrophils, and eosinophils D) neutrophils and monocytes E) Sertoli cells and Schwann cells
In the brain, neurons are more abundant than neuroglia
Indicate whether the statement is true or false