BIO 201 Exam 3 Questions and
Answers Graded A+.
What composes the muscular system? - Answer Skeletal muscles only
What is the study of the muscular system called? - 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 serve various 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.
What is the perimysium layer? - Answer Thicker connective tissue sheath that wraps muscle
fibers together in bundles called fassicles.
What are fassicles? - Answer Bundles of muscle fibers together
, Are fassicles visible to the naked eye, and if so what do they look like? - Answer Yes fassicles
are visible to the naked eye, and they appear as parallel strands.
What does the perimysium carry? - Answer Larger blood vessels, larger nerves, and muscle
spindles
What is the epimysium layer? - 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 seems to emerge 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 antagonist? - Answer A muscle that opposes the prime mover, limits the speed or
range of the prime mover.
Answers Graded A+.
What composes the muscular system? - Answer Skeletal muscles only
What is the study of the muscular system called? - 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 serve various 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.
What is the perimysium layer? - Answer Thicker connective tissue sheath that wraps muscle
fibers together in bundles called fassicles.
What are fassicles? - Answer Bundles of muscle fibers together
, Are fassicles visible to the naked eye, and if so what do they look like? - Answer Yes fassicles
are visible to the naked eye, and they appear as parallel strands.
What does the perimysium carry? - Answer Larger blood vessels, larger nerves, and muscle
spindles
What is the epimysium layer? - 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 seems to emerge 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 antagonist? - Answer A muscle that opposes the prime mover, limits the speed or
range of the prime mover.
