Exam 10: Muscular Tissue

Age associated muscle decline is irreversible.

The skeletal muscle fibers that fatigue most easily are: 1. red muscle fibers. 2) slow oxidative (type I) fibers. 3) fast glycolytic (type IIb) fibers.

A small amount of tautness or tension in a skeletal muscle due to weak, involuntary contractions of its motor units is called _____.

During contraction in a skeletal muscle fiber:

Cardiac and smooth muscle tissues have autorhythmicity.

Somites give rise to the skeletal muscles of the thoracic and abdominal walls as well as the appendages.

Match the connective tissue components of skeletal muscle with the tissues. Match perimysium with the correct tissue type.

This band labeled B will shorten during muscle contraction.

Neurotransmitter receptors are found where on the sarcolemma?

Cardiac muscle fibers (cells) contain more mitochondria than do skeletal muscle fibers (cells).

This structure labeled C extends from M-line to M-line.

The ability of muscular tissue to be stretched without being damaged is:

Describe the four steps of the contraction cycle.

All muscles of the body are derived from ectoderm.

As skeletal muscle ages, after age 30, which of the following does NOT occur?

Match the connective tissue components of smooth muscle with the tissues. Identify the characteristics of smooth muscle tissue.

The specialized region of sarcolemma that is located at a neuromuscular junction is called the synaptic cleft.

Which of the following is FALSE regarding skeletal muscle fibers (cells)?

Identify this organelle of the muscle fiber (cell) labeled A.

The structure that is labeled A is referred to as a ligament.