Exam 4: Principles of Neural and Hormonal Communication

Match the part of the autonomic nervous system, labelled a. through d., with its description(s). (Options may be used more than once or not at all.) a.sympathetic nervous system b.parasympathetic nervous system c.both sympathetic and parasympathetic nervous system d.neither sympathetic nor parasympathetic nervous system -originates in the cranial and sacral regions of the CNS

Describe the events that occur at a skeletal neuromuscular junction.

Match the types of autonomic receptors, labelled a. through e., with their characteristic(s). (More than one answer may apply.) a.nicotinic receptors b.muscarinic receptors c.alpha receptors d.beta-1 receptors e.beta-2 receptors -found in all autonomic ganglia

Which statement describes Pacinian corpuscles?

Match the ear parts, labelled a. through e., with their characteristics. (Options may be used more than once or not at all.) a.external ear b.middle ear c.cochlea in the inner ear d.semicircular canal in the inner ear e.utricle and saccule in the inner ear -concerned with sense of equilibrium

Most sympathetic postganglionic fibres have cell bodies in a sympathetic ganglion _______________.

Which statement applies correctly to myopia?

Match the structures, labelled a. through h., with their proper sequence of involvement in the visual pathway. a.bipolar neurons b.optic nerve c.lateral geniculate nucleus d.rods and cones e.visual cortex f.optic tracts g.ganglion cells h.optic radiations -sixth

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.) a.parasympathetic division b.sympathetic division c.both parasympathetic and sympathetic divisions d.neither parasympathetic nor sympathetic divisions -generally have long preganglionic fibres, and shorter postganglionic fibres

Action potentials are transmitted on a one-to-one basis at both a neuromuscular junction and a synapse.

Light must pass through several layers of retinal cells before reaching rods and cones.

The ____________________ is the layer of the eye that contains the photoreceptor cells.

In response to high-frequency sounds, the segment of the basilar membrane closer to the oval window vibrates maximally.

Match the rods and cones, labelled a. through c., with their properties. (Options may be used more than once or not at all.) a.rods b.cones c.both rods and cones -used for night vision

Through lateral inhibition, a more intensely activated receptor pathway halts transmission of impulses in surrounding, less intensely stimulated pathways.

Match the eye disorders, labelled a. through i., with their descriptions. (Options may be used more than once or not at all.) a.colour blindness b.night blindness c.glaucoma d.hyperopia e.diplopia f.presbyopia g.myopia h.cataract i.astigmatism -opaque lens

Match the ear parts, labelled a. through e., with their characteristics. (Options may be used more than once or not at all.) a.external ear b.middle ear c.cochlea in the inner ear d.semicircular canal in the inner ear e.utricle and saccule in the inner ear -consists of three elongated spiral compartments

The parasympathetic nervous system dominates in fight-or-flight situations.

Which of these is the correct statement about the neuromuscular junction?

Match the pathways, labelled a. through c., with the regions. a.ascending pain pathway b.descending analgesic pathway c.both pain and analgesic pathways -thalamus