MP2 Quiz 7

The epimysium covering on the outside of the muscle can blend into cordlike ____ or sheetlike ____.

• ligaments; tendons

• fascia; ligaments

• aponeuroses; ligaments

• tendons; aponeuroses

The ____ is an organelle that wraps and surrounds the myofibril and stores calcium.

• sarcoplasmic reticulum

• sarcolemma

• cross bridge

• sarcomere

The heads of the myosin myofilaments are called ____ when they link the thick and thin filaments together during skeletal muscle contraction.

• cross bridges

• synapses

• motor units

• neuromuscular junctions

When a skeletal muscle is fully contracted, the ____ are closer to the thick filaments.

• M lines

• Cross bridges

• A bands

• A discs

Endomysium covers ____.

• an entire muscle

• an individual muscle cell

• myofibrils

• fascicles of muscle cells

• smooth muscle only

The plasma membrane of a skeletal muscle cell is called the ____.

• sarcoplasmic reticulum

• myofilament

• sarcoplasm

• sarcolemma

• sarcomere

Smooth muscle cells are ____.

• striated

• involuntary

• cylindrical

• multinucleate

• branched

Which type of muscle tissue contracts most quickly upon stimulation?

• visceral

• tendons

• cardiac

• skeletal

• smooth

Which of the following is NOT a function of the muscular system?

• maintenance of posture

• homeostasis

• stabilization of joints

• generation of heat

• production of movement

A sarcomere is ________.

• a compartment in a myofilament

• the wavy lines on the cell, as seen in a microscope

• the nonfunctional unit of skeletal muscle

• the contractile unit between two Z discs

• the area between two intercalated discs