Exam 4: The Peripheral Nervous System: Sensory, Autonomic, Somatic

Match the ear parts, labelled a. through e., with their characteristics. (Options may be used more than once or not at all.) -air filled

The sympathetic branch of the autonomic nervous system has its cells of origin in the brain stem as well as the spinal cord.

____________________ is the bending of light rays as they pass from one medium to another.

The utricle detects changes in head position away from horizontally and vertically directed linear acceleration and deceleration.

Colour blindness may be caused by vitamin A deficiency.

Match the type of neuron, labelled a. through d., with its description(s). (Options may be used more than once or not at all.) -alpha motor neurons

Curare blocks the action of ACh at receptor-channels; therefore, it is considered a(n) _____.

Which afferent input does NOT reach the conscious level

Which structure contributes the most to the total refractive ability of the eye

Phasic receptors do not adapt at all or they adapt slowly.

Which statement describes rhodopsin

Which of these statements describes the circular muscle of the iris

Match the eye disorders, labelled a. through i., with their descriptions. (Options may be used more than once or not at all.) -corrected by convex

Short wavelengths of light are perceived in the red-orange colour range.

Match the divisions, labelled a. through d., with the anatomical and physiological autonomic features. (Options may be used more than once or not at all.) -generally have long preganglionic fibres, and shorter postganglionic fibres

The smaller the receptive fields in a region ______________

Which one of the following involves a response of a skeletal muscle through an efferent output

Ascending pathways have different destinations in the cortex, the thalamus, and the reticular formation.

The helicotrema is located beyond the tip of the cochlear duct.

Match the divisions, labelled a. through d., with the anatomical and physiological autonomic features. (Options may be used more than once or not at all.) -preganglionic fibres that release acetylcholine as their neurotransmitter