The muscles
The epimysium is represented by letter
A
Endomysium covers;
An individual muscle cell
Muscles that perform opposite actions to one another are termed
Antagonist
A muscle group that works with and assists the action of a prime mover is a(n):
Antagonist only
The endomysium that wraps individual muscle fibers is indicated by letter
B
Which of the following muscles are antagonists
Biceps brachii and triceps brachii
Which of the following muscles closes the jaw
Both masseter and temporalis
A nursing infant develops a powerful sucking muscle that adults also use for whistling or blowing a trumpet called the
Buccinator
The perimysium wraps a fascicle of muscle cells and is represented by letter
C
Which one of the following is the action of the orbicularis oris:
Closes, purse, and protrudes the lips
Muscle tissue has the ability to shorten when adequately stimulated, a characteristic known as
Contractility
Place these structures of the skeletal muscle in order from largest to smallest: 1) Fascicle 2) Myofilament 3) Muscle fiber (cell) 4) Myofibril 5) Sarcomere
Correct order: 1) Fascicle 3) Muscle fiber (cell) 4) Myofibril 5) Sarcomere 2) Myofilament
The muscle fiver is indicated by letter
D
Thick filaments are made of a protein called actin
FALSE -Myosin
All types of muscle have Endomysium covering individual muscle cells.
FALSE -Skeletal muscle have Endomysium covering individual muscle cells
Cardiac and smooth muscle both have striations
FALSE - Skeletal muscle has striations
Smooth muscles activity generates heat to help maintain body temperature
FALSE -Skeletal muscles activity generate heat to help maintain body temperature.
Which of the following is NOT a function of the muscular system:
Hematopoiesis
Smooth muscle cells are:
Involuntary
Which one of the following is NOT a criteria generally used in naming muscles:
Method of attachment of the muscle to bone
The plasma membrane of a skeletal muscle is called the:
Sarcolemma
The plasma membrane of skeletal muscle cells is called
Sarcolemma
An elaborate and specialized network of membranes in skeletal muscle cells that function in calcium storage is the
Sarcoplasmic reticulum
Which of these muscles is NOT located in the head
Sartorius
Which type of muscle tissue responds the fastest to stimulations to contract:
Skeletal
Striated, voluntary, multinucleate muscle is classified as
Skeletal muscle
Voluntary muscle tissue is;
Skeletal muscle
The type of muscle tissue pictured in figure 6.3 is:
Smooth muscle
Cardiac muscle fibers are relatively short , tapering cells within a single centrally located nucleus
TRUE
The neurotransmitter used by the nervous system to activate skeletal muscle cells is acetylcholine
TRUE
The sarcoplasmic reticulum wraps like a sleeve around the myofibril and stores and releases calcium
TRUE
The striations seen in skeletal muscle are actually alternating A and I bands
TRUE
The epimysium covering on the outside of the muscle can blend into cordlike _______________ or sheet like _________________
Tendons; Aponeuroses
A sarcomere is:
The contractile unit between two Z discs
Which one of the following is composed of myosin protein
Thick filaments
The muscle referred to as the ''Smiling'' muscle because it raised the corners of the mouth upward is the
Zygomaticus
