The Smallest Unit of Muscle Structure Is the

question 30

Multiple Choice

The smallest unit of muscle structure is the

• A) Actin
• B) Endomysium
• C) Myofibril
• D) Myofilament
• E) Myosin

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Definitions:

Glucagon

A hormone produced by the pancreas that raises blood glucose levels, acting as a counter-regulatory hormone to insulin.

Progesterone

A steroid hormone released by the corpus luteum and important in the regulation of reproduction, preparing the uterus for implantation of a fertilized egg and maintaining pregnancy.

Cortisol

Cortisol is a steroid hormone produced by the adrenal glands, involved in the response to stress and metabolism regulation, including the control of blood sugar levels.

Prolactin

A hormone released by the pituitary gland that stimulates milk production in lactating females and has various other effects in both sexes.