Children have slender, short vocal cords so their voices tend to be
A) louder.
B) softer.
C) higher pitched.
D) lower pitched.
E) deeper toned.
C
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Match the following terms with the correct descriptions.
1. These cells contain hemoglobin and iron. 2. These are fragments of a megakaryocyte. 3. Phagocytic, these cells make up the majority of WBCs. 4. A type of granulocyte, these have red granules. 5. Often called immunocytes, these cells direct the activities of the immune system. A. lymphocytes B. erythrocytes C. eosinophils D. platelets E. neutrophils
Activation of lymphocytes occurs in
A. primary lymphatic structures. B. secondary lymphatic structures. C. tertiary lymphatic structures. D. effectors such as muscles and glands.
Enzymes that digest carbohydrates include
A. peptidases. B. amylase, maltase, and sucrase. C. lipase. D. maltase and lipase. E. trypsin and chymotrypsin.
Light passes through the following structures in which order?
A) vitreous humor, lens, aqueous humor, cornea B) aqueous humor, cornea, lens, vitreous humor C) cornea, vitreous humor, lens, aqueous humor D) cornea, aqueous humor, lens, vitreous humor