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