Which of the Following Is TRUE with Regard to the Sliding

question 61

Multiple Choice

Which of the following is TRUE with regard to the sliding filament mechanism of muscle contraction?

• A) When a muscle fiber is contracting, the thin fibers are connected to the thick fibers.
• B) The muscle relaxes when calcium ions are released into the fluid surrounding the thick and thin filaments.
• C) The energy for contraction comes from the breakdown of actin into myosin.
• D) When actin pushes the Z discs farther apart, the muscle contracts.

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Definitions:

Neurological Deficits

Impairments or losses in the functioning of the nervous system resulting from injury, disease, or a disorder affecting the brain, spinal cord, or other nerves.

Sudden Infant Death Syndrome

The unexplained death, usually during sleep, of a seemingly healthy baby less than a year old.

Attention Deficit Disorder

A neurological disorder characterized by a pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development.

Malformations

Physical or structural abnormalities that deviate from the normal development or formation, often present from birth.