Anatomy Chapter 7 Quiz: Muscle
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
