Select the pathway along which images received by the retina of the eye will travel into the brain
A) optic nerve, optic chiasma, optic tracts, thalamus, optic radiation, occipital lobe
B) cochlear nerve, optic disc, optic tracts, thalamus, temporal lobe
C) optic tracts, optic chiasma, optic nerve, thalamus, optic radiation, occipital lobe
D) optic nerve, optic radiation, optic tracts, hypothalamus, temporal lobe
E) vestibular nerve, optic disc, optic chiasma, optic tracts, thalamus, parietal lobe
A
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A scientist who describes the layers of the heart wall and their relationship to the surrounding pericardium would be a(n)
A. anatomist.?B. physiologist.?C. pathologist.?D. pulmonologist.
Which of the following statements regarding whole-muscle contraction is TRUE?
A. The order of recruitment of motor units in a muscle is such that the last units recruited are those that fatigue most readily. B. The order of recruitment of motor units in a muscle is such that the first units recruited generate the most tension. C. Motor units whose motor neurons have large-diameter cell bodies are recruited first, while motor units with smaller-diameter motor neurons are only activated as the level of activation in the spinal cord increases. D. The order of motor unit recruitment is independent of the size of the alpha motor neuron that innervates them. E. Recruitment of one fast-glycolytic motor unit provides a smaller increment in whole-muscle tension than recruitment of one slow-oxidative motor unit.
The diploid number of chromosomes in a human is 46. Therefore, the number of chromosomes in a primary spermatocyte or primary oocyte is ________.
A) 23 B) 46 C) 92 D) 38
Carbohydrates and proteins are built up from their basic building blocks by the ________.
A) addition of a water molecule between each two units B) addition of a carbon atom between each two units C) removal of a water molecule between each two units D) removal of a nitrogen atom between each two units