During implantation, the developing blastocyst receives nutrients from (the)
A) chorion.
B) endometrial glands.
C) cellular trophoblast.
D) placenta.
E) None of the answers are correct.
B) endometrial glands.
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Why are injections administered in the hypodermis when administering drugs using a hypodermic needle?
A) There is an abundance of capillaries in the hypodermis. B) The hypodermis is highly innervated. C) Since it is vascularized, the hypodermis can absorb a lot of fluid. D) Both elastic fibers and collagen fibers are present. E) The presence of blood vessels and lymphatic vessels help local tissues defend and repair themselves.
Making a Manometer
What will be an ideal response?
The long refractory period observed in cardiac muscle
A. prevents tetanic contractions of the cardiac muscle. B. prevents an increase in heart rate. C. ensures that the heart has adequate time to contract. D. prevents the heart rate from slowing down. E. prolongs depolarization of the cardiac muscle.
The Adam's apple is formed by the
A) thyroid cartilage B) glottis C) cricoid cartilage D) hyoid bone