The process that results in daughter cells with half of the original chromosome number is _____.
A) Mitosis
B) Prophase
C) meiosis
D) karyokinesis
Ans: C) meiosis
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Which cranial nerves have a negative chronotropic effect on heart rate?
A) vagus nerves (CN X) B) trochlear nerves (CN IV) C) glossopharyngeal nerves (CN IX) D) hypoglossal nerves (CN XII)
Which of the following is incorrect pertaining to the vertebral artery?
A) It traverses the transverse foramina of the cervical vertebrae. B) If partially occluded, it can cause dizziness upon turning the head. C) It traverses the suboccipital triangle. D) It traverses a groove on the posterior arch of the atlas. E) It only has branches that supply the brain.
The cell that accounts for almost half of the volume of blood is the
A) red blood cell. B) leukocyte. C) platelet. D) thrombocyte. E) megakaryocyte.
The regions of the midbrain that issue subconscious motor commands that affect upper limb position and background muscle tone are the
A) tecta. B) red nuclei. C) cerebral peduncles. D) superior colliculi. E) inferior colliculi.