BIO 201 Exam 3 Chap 10 pt 2

T/F: muscles acting as antagonists produce most of the force during a particular joint action

false

on its outer surface, the epimysium is continuous with which of the following? -sarcolemma -fascia -perimysium -endomysium

fascia

which term refers to a sheet of connective tissue that separates neighboring muscles or muscle groups? -fascia -epimysium -permysium -endomysium

fascia

which term refers to bundles of muscle fibers, wrapped in connective tissue, within a muscle? -striations -fascicles -tendons -compartments

fascicles

a specific type of synergist that acts to hold a bone steady during an action is called a what?

fixator

a muscle that is thick in the middle and tapered at each end is classified as a ____ muscle

fusiform

which term is another word for prime mover? -antagonist -agonist -fixator -synergist

agonist

during elbow flexion, the triceps brachi acts as an ____ of the biceps brachii and brachialis muscles because it opposes the action

antagonist

which term refers to a muscle that opposes the prime mover? -agonist -fixator -synergist -antagonist

antagonist

which of the following are functions of the endomysium? select all that apply -contains stretch receptors called muscle spindles -provides the extracellular chemical environment for each muscle fiber -creates room for capillaries and nerve fibers to reach every muscle fiber -separates individual muscle fibers

-provides the extracellular chemical environment for each muscle fiber -creates room for capillaries and nerve fibers to reach every muscle fiber -separates individual muscle fivers

Projections extending from the inner surface of the epimysium form which of the following?

Perimysium

what is the perimysium? -a layer of loose connective tissue layer surrounding each individual muscle cell -a connective tissue sheath surrounding an entire muscle -the plasma membrane of an individual muscle cell -a connective tissue sheath bundling many muscle fibers into a fascicle

a connective tissue sheath bundling many muscle fibers into a fascicle

which of the following describes the epimysium? -the plasma membrane of an individual muscle cell -a loose connective tissue layer around each individual muscle cell -a connective tissue sheath surrounding an entire muscle -a connective tissue sheath bundling many muscle fibers into a fascicle

a connective tissue sheath surrounding an entire muscle

which of the following describes the endomysium? -a connective tissue sheath surrounding an entire muscle -the plasma membrane of an individual muscle cell -a connective tissue sheath bundling many muscle fibers into a fascicle -a loose connective tissue layer around each individual muscle cell

a loose connective tissue layer around each individual muscle cell

which of the following describes an extrinsic muscle? -a circle-shaped muscle that surrounds a body opening -a muscle that holds a bone still during a particular movement -a muscle that is contained entirely within one region -a muscle that arises from one region, but acts upon a different region

a muscle that arises from one region, but acts upon a different region

what is a fascia? -a thin sleeve of connective tissue surrounding an individual muscle fiber -the plasma membrane of muscle cell -a thick sheet of connective tissue separating neighboring groups of muscles -a connective tissue sheath encircling an individual muscle fascicle

a thick sheet of connective tissue separating neighboring groups of muscles

muscles that form rings around body openings are described by shape as being ___ muscles

circular

fasicae separates muscles into functional groups. which term refers to these enclosed groups of muscles? -fixators -aponeuroses -antagonists -compartments

compartments

the loose connective tissue layer that surrounds individual muscle cells is called the ____

endomysium

the ____ of a muscle refers to the identity of the nerve that stimulates it

innervation

the especially think fasicae that separate the muscle compartments of the arm are known as ____ septa

intermuscular

muscles that are entirely contained within a particular region are called ___ muscles

intrinsic

which of the following are functions of skeletal muscle? select all that apply. -movement -joint stability -heat production -vitamin D synthesis

joint stability, movement and heat production

the perimysium contains which of the following? select all that apply -nerves -bone tissue -muscle spindles -blood vessels

nerves, muscle spindles and blood vessels

a muscle of uniform width with fascicles aligned along its longitudinal axis would be classified as a ____ muscle

parallel

a muscle with its fasciculi arranged like barbs of a feather is called a ____ muscle

pennate

a muscle that is broad at one end and narrower at the other is classified as a ___ muscle

triangular