Anatomy Chapter 7 Quiz: Muscle

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Connective tissue that surrounds an entire muscle is called

epimysium

Which of the following is a muscle of eyebrow facial expressions

frontalis

Which of the following muscle is directly involved with climbing stairs

gluteus maximus

Skeletal muscle fibers differ from "typical cells" in that these muscle fibers

have many nuclei

During activities requiring aerobic endurance,

most of the muscles energy is produced in mitochondria

All the muscle fibers controlled by a single motor neuron are collectively called

motor units

Which of the following is a muscular adaptation as a result of exercise

muscle fibers increase their reserves of glycogen

Resisting tension in a skeletal muscle is called

muscle tone

Which of the following would have the highest density of (small) motor units

muscles that control the eye

Which of the following muscles help maintain all the organs from the body cavity from falling out into the skin layer

rectus abdominis

Muscles comprising the quadriceps group include the

rectus femoris, vastus intermedius, vastus lateralis, and vastus medualis

Which of the following means a passive force that opposes movement

resistance

The striated appearance of skeletal muscle results from

sarcomere arrangement

The longest muscle of the human body is located from the hip to the medial art of the knee called

sartorius

Which type of scenario is most likely

small motor units are recruited first

Nonstriated, involuntary muscle is

smooth

Which of the following activities would employ isometric contractions

standing at attention

What is the function of the transverse tubule

to transmit muscle impulses to the cells interior

The reduction of the size of muscle fibers due to inactivity is called

atrophy

Rigor mortis occurs at death due to a lack of

ATP

The lighter area between two successive A bands that includes the Z lines is called

I line

Myofibrils are made primarily of

actin and myosin

A resting muscle generates most of its ATP by

aerobic respiration (cellular respiration)

A patient who has become paralyzed, now has significantly smaller, weaker muscles in their legs. This is because muscle that is not regularly stimulated by motor neurons become

atrophied

The tension never overcomes the resistance

isometric

When the tension produced by a muscle does not overcome the resistance then that muscle contraction is considered

isometric

standing up straight

isometric

the muscle does not change length

isometric

push-ups

isotonic

riding a bicycle

isotonic

rollerblading

isotonic

running a marathon

isotonic

the muscle changes length

isotonic

the tension overcomes the resistance

isotonic

weight lifting

isotonic

Which of the following are a function of skeletal muscle

maintain posture, produce movement, maintain body temperature

Which of the following is involved with chewing & is one of the strongest muscles of the body

masseter

Rigor mortis that occurs in skeletal muscles a few hours after death is due to

decreased ATP and increased permeability to calcium

Which of the following moves the humerus

deltoid

Muscles whose names contain the root cervi- would be found in the

neck


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