The Following Steps Occur in Rods When They Are Excited

question 46

Multiple Choice

The following steps occur in rods when they are excited by photons of light.
1) Ganglia cells detect changes in bipolar cell activity.
2) Neurotransmitter release changes.
3) Retinal changes to a more linear form.
4) Rhodopsin breaks down (bleaches) .
5) Opsin changes the membrane permeability of the outer segment to Na⁺.
6) Opsin activation occurs.
The proper sequence for these steps is

• A) 1, 6, 5, 2, 4, 3.
• B) 3, 6, 5, 2, 1, 4.
• C) 6, 3, 5, 2, 1, 4.
• D) 3, 6, 5, 1, 2, 4.
• E) 1, 3, 4, 5, 6, 2.

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Definitions:

Diaphysis

The shaft or central part of a long bone.

Endosteum

The thin vascular membrane of connective tissue that lines the inner surface of bony tissue, involved in bone growth and healing.

Periosteum

The membrane that surrounds the diaphysis of a bone.

Osteosarcoma

A type of cancer that originates in bone cells and is most commonly found in the long bones near growth plates.