Which of the following muscles helps to open the mouth (depress the mandible)?
A. Depressor anguli oris
B. Sternohyoid
C. Digastric
D. Zygomaticus major
E. Mentalis
Answer: C
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Which is not correct regarding B-lymphocytes?
A. Each B-lymphocyte responds to one particular antigen. B. They must be activated by helper T-lymphocytes, which present antigens to them. C. Memory B-lymphocytes may live for months or even years. D. Activated B-lymphocytes transform into plasma cells, memory B-lymphocytes, or NK cells. E. B-lymphocytes produce immunoglobulins.
Lymphatic capillaries are present in ________
A) digestive organs B) CNS C) bones and teeth D) bone marrow
Hormones that the posterior pituitary secretes are synthesized in the
A) anterior pituitary. B) thalamus. C) posterior pituitary. D) hypothalamus.
After kicking a ball at a soccer match, Leticia feels excruciating pain at the back of her thigh. She has likely suffered an injury to which of the following?
A. The calcaneal tendon B. The thigh adductors C. The sciatic nerve D. The quadriceps femoris E. The hamstrings