What type of cartilage is found in the pinna of the ear and in the epiglottis of the throat?
A. Hyaline cartilage
B. Fibroelastic cartilage
C. Fibrocartilage
D. Elastic cartilage
Answer: D
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Descending nerve fiber bundles on the ventrolateral surface of the midbrain are the
A) tegmenta. B) corpora quadrigemina. C) cerebral peduncles. D) superior colliculi. E) inferior colliculi.
The main reason why an individual with type AB, Rh-negative blood cannot donate blood to an individual with type A, Rh-positive blood is because ________.
A. anti-B antibodies in the recipient will agglutinate RBCs of the donor B. anti-B antibodies in the donor will agglutinate RBCs of the recipient C. anti-A antibodies in the recipient will agglutinate RBCs of the donor D. anti-A antibodies in the donor will agglutinate RBCs of the recipient E. anti-D antibodies in the donor will agglutinate RBC of the recipient
In the differentiation of a normal female:
A. Müllerian inhibiting substance causes the Müllerian ducts to regress. B. the uterus and fallopian tubes are formed from the Wolffian ducts. C. female genitalia form in the absence of hormonal stimulation. D. the gonads remain undifferentiated throughout fetal life. E. the SRX protein present on X chromosomes makes the gonads differentiate into ovaries.
This figure shows the anatomy of compact bone. Which number indicates an osteon?
A. 1 B. 2 C. 3 D. 4 E. 5