Emergency room doctors often shine a light into the eyes of patients with head injuries to test their pupillary reflex.  The structure that relays the information between the optic nerve and the motor neuron, and the division of the nervous system that the structure is part of , respectively are:   Select one: a. an interneuron and the peripheral nervous system b. the occipital lobe and the peripheral nervous system c. the occipital lobe and the central nervous system d. an interneuron and the central nervous system

You touch the skin with two points of a caliper 13 mm apart, and the subject is able to perceive both points. Which of the following are possible explanations? O A. The two points of the calipers were within two different receptive fields, and both primary sensory neurons converged onto the same secondary sensory neuron B. The two points of the caliper were in overlapping receptive fields and lateral inhibition allowed both points to be distinguished C. The two points of the calipers were within two different receptive fields, and both primary sensory neurons converged onto separate secondary sensory neurons. O Only A and B Only B and C

Which of the following statements about the eye is/are TRUE? Group of answer choices Parasympathetic (sympathetic) innervation of the sphincter pupillae stimulates pupil dilation. Photoreceptors in the retina are of two types: rods and cones. Eye color is determined by that of the iris. A. Light striking the fovea centralis goes unnoticed and is commonly called the "blind spot". B. Light entering the eye passes through the cornea, anterior chamber, pupil, lens, and vitreous body, from outer to inner.(posterior only) C. Movement of the extrinsic muscles of the eye is controlled by the autonomic (optic nerve) nervous system. D. Because lacrimal fluid ultimately enters into the nasal cavity, people often sniffle when they cry. F. The adjustability of the lens allows the eye to focus on nearby objects.

1b) The process of myelination results in an increase in white matter. Myelination happens for all brain regions. Because of increases in myelination i. At different times; neural signals can travel through the brain faster ii. At different times; neurogenesis is improved iii. At the same time; neurogenesis is improved iv. At the same time; neural signals can travel through the brain faster 1c) Which of the following is an illustration of experience-dependent plasticity? i. Rats raised in cages with toys have more dendritic spines and more synapses per neuron than rats raised in cages without this stimulation ii. The brain expects experiences that all humans have (such as visual and auditory input) and uses them to shape the structure of the brain. iii. Adults who became blind early in life were better able to discriminate musical pitch than were those who became blind later in life. iv. All of the above