Discuss how image-processing occurs in the retina when light strikes photoreceptors
What will be an ideal response?
Rods and cones move from a depolarized state in the dark to a hyperpolarized state in the light. When light strikes photoreceptor cells, light hyperpolarizes the photoreceptor and it stops releasing glutamate. The bipolar cell is free from inhibition and depolarizes, releasing neurotransmitter onto the retinal ganglion cell. The retinal ganglion cell produces action potentials that are sent to the brain via the optic nerve.
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A whistling murmur heard between the second and first heart sound would be indicative of
a. a stenotic AV valve. b. an insufficient AV valve. c. a stenotic aortic or pulmonary semilunar valve. d. an insufficient aortic or pulmonary semilunar valve. e. no conclusions can be reached based on the information provided.
What is the plane for Scapular upward (outward) and downward (inward) rotation?
What will be an ideal response?
A(n) ________ is a sac of fluid associated with a synovial joint.
A. articular sac B. bursa C. meniscus D. articular cavity E. synovial vesicle
The process of leukocytes squeezing through the capillary pores to exit the vasculature is known as ____________________
Fill in the blank(s) with correct word