What makes up the muscular system? - ANSWER Skeletal muscles alone
What is the study of the muscular system? - ANSWER Myology
What are the 4 functions of muscles? - ANSWER 1. Movement
2. Stability
3. Control of body openings and passages
4. Heat production
Muscular movements also play many roles in ______________. - ANSWER
Communication
Describe stability. - ANSWER Prevents unwanted movements, there are some
muscles known as the antigravity muscles that fight against gravity that help us
not fall over or slump.
What percent of body heat is produced by skeletal muscles? - ANSWER 85%
What is the endomysium layer? - ANSWER Thin sleeve of loose connective
tissue that surrounds each muscle fiber.
,The endomysium layer provides room for two things, what are they? -
ANSWER 1. Blood capillaries
2. Nerve fibers
The endomysium also provides an __________ ______________ environment
for the muscle fiber. - ANSWER extracellular chemical
Relate the endomysium tissue and excitation. - ANSWER Excitation of the
muscle fiber depends on exchange of calcium, sodium, and potassium ions
across the endomysial tissue and the nerve end.
Perimysium layer - ANSWER Thicker connective tissue sheath that wraps
muscle fibers together in bundles called fassicles.
Fassicles - ANSWER Bundles of muscle fibers together
Are visible to naked eye, and if so what do they look like? - ANSWER Yes
fassicles are visible to naked eye, and they appear to be parallel strands.
What does the perimysium carry? - ANSWER Larger blood vessels, larger
nerves, and muscle spindles
What is the layer of epimysium? - ANSWER The fibrous sheath that surrounds
the entire muscle
What is the fascia? - ANSWER Sheet of connective tissue that separates
neighboring muscles or muscle groups from each other and from the
subcutaneous tissue.
, What are the two types of muscle attachments? - ANSWER 1. Indirect
2. Direct
What is an indirect attachment? - ANSWER The muscle ends short of its bony
destination and the gap is bridged by a tendon.
What is a tendon? - ANSWER Fibrous band or sheet
What is direct attachment? - ANSWER There is so little separation between
muscle and bone that to the naked eye, the red muscular tissue appears to arise
directly from the bone.
What is the origin? - ANSWER The bony site of attachment at the relatively
stationary end.
What is the insertion? - ANSWER Attachment site at its more mobile end
What is the belly? - ANSWER The thicker middle region between the origin
and insertion.
What is the prime mover (agonist)? - ANSWER The muscle that produces
most of the force during a particular joint action.
What is the synergist? - ANSWER Muscle that aids the prime mover.
What is the study of the muscular system? - ANSWER Myology
What are the 4 functions of muscles? - ANSWER 1. Movement
2. Stability
3. Control of body openings and passages
4. Heat production
Muscular movements also play many roles in ______________. - ANSWER
Communication
Describe stability. - ANSWER Prevents unwanted movements, there are some
muscles known as the antigravity muscles that fight against gravity that help us
not fall over or slump.
What percent of body heat is produced by skeletal muscles? - ANSWER 85%
What is the endomysium layer? - ANSWER Thin sleeve of loose connective
tissue that surrounds each muscle fiber.
,The endomysium layer provides room for two things, what are they? -
ANSWER 1. Blood capillaries
2. Nerve fibers
The endomysium also provides an __________ ______________ environment
for the muscle fiber. - ANSWER extracellular chemical
Relate the endomysium tissue and excitation. - ANSWER Excitation of the
muscle fiber depends on exchange of calcium, sodium, and potassium ions
across the endomysial tissue and the nerve end.
Perimysium layer - ANSWER Thicker connective tissue sheath that wraps
muscle fibers together in bundles called fassicles.
Fassicles - ANSWER Bundles of muscle fibers together
Are visible to naked eye, and if so what do they look like? - ANSWER Yes
fassicles are visible to naked eye, and they appear to be parallel strands.
What does the perimysium carry? - ANSWER Larger blood vessels, larger
nerves, and muscle spindles
What is the layer of epimysium? - ANSWER The fibrous sheath that surrounds
the entire muscle
What is the fascia? - ANSWER Sheet of connective tissue that separates
neighboring muscles or muscle groups from each other and from the
subcutaneous tissue.
, What are the two types of muscle attachments? - ANSWER 1. Indirect
2. Direct
What is an indirect attachment? - ANSWER The muscle ends short of its bony
destination and the gap is bridged by a tendon.
What is a tendon? - ANSWER Fibrous band or sheet
What is direct attachment? - ANSWER There is so little separation between
muscle and bone that to the naked eye, the red muscular tissue appears to arise
directly from the bone.
What is the origin? - ANSWER The bony site of attachment at the relatively
stationary end.
What is the insertion? - ANSWER Attachment site at its more mobile end
What is the belly? - ANSWER The thicker middle region between the origin
and insertion.
What is the prime mover (agonist)? - ANSWER The muscle that produces
most of the force during a particular joint action.
What is the synergist? - ANSWER Muscle that aids the prime mover.
