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

Match the rods and cones, labelled a. through c., with their properties. (Options may be used more than once or not at all.) -confer vision in shades of grey

Which of the following applies to curare

Match the terms, labelled a. through c., with their descriptions. (Options may be used more than once or not at all.) -dependent on the amplitude of the sound wave

Each region of the auditory cortex becomes excited only in response to a specific tone detected by a selected portion of the basilar membrane.

Match the rods and cones, labelled a. through c., with their properties. (Options may be used more than once or not at all.) -much convergence in pathways

Match the type of nociceptor, labelled a. through c., with the properties associated with each type of nociceptor. (Options may be used more than once or not at all.) -activates fast pain pathway

Which statement applies to the choroid

A convex lens converges light rays or brings them closer together.

Which statement applies to phasic receptors

When light of suitable wavelength strikes a photoreceptor, the photopigment (absorbs or reflects) the light, causing the photopigment to (dissociate or regenerate).This photopigment transformation acts through a second messenger system to cause Na⁺ channels in the outer segment to (open or close).Subsequently, the photoreceptor (depolarizes or hyperpolarizes), which results in a(n) (increase or decrease) in release of an (inhibitory or excitatory) transmitter from its synaptic terminal.

Which statement applies to polymodal nociceptors

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

Which of these chemicals paralyzes skeletal muscle by binding to the acetylcholine receptor sites

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.) -postganglionic fibre that secretes acetylcholine

Why do cones have higher acuity than rods

Which of the following best describes endorphins and enkephalins

Sympathetic stimulation of the gallbladder relaxes the activity of this organ.

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

Which of these statements applies to the sympathetic nervous system

A receptor cell initially develops a generator potential by the influx of potassium.