Which Is True

question 17

Multiple Choice

Which is true?

• A)all three heads of the triceps brachii extend the arm at the glenohumeral joint
• B)the long head of the triceps brachii adducts and extends the arm at the glenohumeral joint
• C)only the medial head of the triceps brachii extends the forearm at the elbow joint
• D)none of the above

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Definitions:

Light Focuses

Refers to the convergence, bending, or direction of light rays to a point, which is fundamental in optics for creating images in cameras, telescopes, and the human eye.

Retina

A thin layer of tissue at the back of the eye that contains cells sensitive to light, which convert images into electrical signals sent to the brain.

Receptors

are specialized cells or proteins that detect and respond to external signals such as chemicals, light, or pressure.

Seeing Details

refers to the ability to perceive fine or small elements or differences in objects, images, or scenes.