The plasma membrane of a skeletal muscle is called the
Which type of muscle tissue responds the fastest to stimulations to contract
What is not a function of the muscular system
A sarcomere is
The contractile unit between two Z discs
A neurotransmitter that stimulates skeletal muscle
The gap between the axon terminal of a motor neuron & the sarcolemma of a skeletal musle cell is called
A single, brief, jerky muscle contraction is termed
Anaerobic glycolysis occurs within
What muscle closes the jaw
Masseter & temporalis
What muscle is not located in the head
What is the action of the orbicularis oris
Closes, purses, and protrudes the lips
Which congenital muscle disease results from the degeneration and atrophy of muscles
T or F: Cardiac & smooth muscle both have striations
T or F: A sustained partial contraction of skeletal muscle is called muscle tone
T or F: When a muscle fiber contracts, the I bands diminish in size, the H zones disappear, and the A bands move closer together but do not diminish in length
The essential function of any muscle is to ?
The three types of muscle tissue are skeletal, cardiac, and ?
Although ATP provides the energy for muscle contraction, ? must also be present for muscle fibers to slide properly during .
The neurotransmitter ? is vital to proper muscle functioning
Referring to the muscle attachment to bones, the ? is the immovable attachment site
An important medical injection site in the hip is the ?
Exercise throughout life helps muscles to retain both strength and ?
A fascicle is wrapped by a layer of connective tissue called ?
Consider the two types of muscle contractions described in this chapter; in ? contractions, the muscle may shorten and movement may occur
Considering the relationship between the biceps and the triceps, the biceps is the ? whereas the triceps is the ? as the elbow is flexed
Prime mover, antagonist
The anatomical term for a muscle cell, in skeletal and smooth muscle tissues, is ?
The endomysium is a delicate connective tissue sheath that surrounds a/an ?
Skeletal muscle fiber
A tissue with striations and many flattened nuclei under the plasma membrane in each cell would be called ?
In a skeletal muscle fiber, the sarcomere is a repetitive unit that consists of the entire region between the ?
Muscles that are concerned with bracing actions are called ?
The bending or movement of a limb toward the midline of the body is known as ?
The muscle whose action is dorsiflexion and inversion of the foot is the ?
The muscle that facilitates flexion of the forearm is the ?
The muscle that is mainly responsible for a particular movement is known as the ?
The plasma membrane of a muscle cell is most usually termed a ?
What is the BEST definition of the origin of a muscle?
The attachment of the muscle to a bone that is relatively fixed
Which of the following can best be used to distinguish cardiac muscle from smooth muscle?
Cardiac muscle is striated
Which of these muscles is located in the abdominal region?
The nuclei of skeletal muscle cells are pushed aside by long, ribbonlike organelles called ?, which nearly fill the cytoplasm
What is the specific neurotransmitter that is released by motor neurons and stimulates skeletal muscle?
Which of the following is NOT a function of skeletal muscle?
Participates in the transport of oxygen in the blood to the tissues
Which of the following refers to one neuron and all the skeletal muscle cells it stimulates?
Which of the following statements is NOT true?
Tetanic contraction of muscles refers to a disease that causes total, sustained contraction of muscles
Which of the following statements is NOT true regarding energy generation for muscle contraction?
Anaerobic glycolysis is not an energy source for muscle contraction.
(Anaerobic glycolysis produces about 5 percent as much ATP from each glucose molecule as aerobic respiration. However, it is faster and can provide most of the ATP needed for 30 to 40 seconds of strenuous muscle activity.)
Which of the following statements is NOT true regarding muscle attachments and body movements?
When the foot is dorsiflexed, the foot is flat on the ground
(When the foot is dorsiflexed, the toes and foot are pointed superiorly)
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