BIO 201 – Exam 3: Musculoskeletal and
Nervous Systems (Rio Salado College) ||
GRADED A+|| LATEST UPDATE 2025/26
What composes the muscular system? -CORRECTANSWER Skeletal muscles only
What is the study of the muscular system called? -CORRECTANSWER Myology
What are the 4 functions of muscles? -CORRECTANSWER 1. Movement
2. Stability
3. Control of body openings and passages
4. Heat production
Muscular movements also serve various roles in ______________. -
CORRECTANSWER Communication
Describe stability. -CORRECTANSWER 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? -CORRECTANSWER 85%
,What is the endomysium layer? -CORRECTANSWER Thin sleeve of loose connective
tissue that surrounds each muscle fiber.
The endomysium layer provides room for two things, what are they? -
CORRECTANSWER 1. Blood capillaries
2. Nerve fibers
The endomysium also provides an __________ ______________ environment for the
muscle fiber. -CORRECTANSWER extracellular chemical
Relate the endomysium tissue and excitation. -CORRECTANSWER 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? -CORRECTANSWER Thicker connective tissue sheath
that wraps muscle fibers together in bundles called fassicles.
What are fassicles? -CORRECTANSWER Bundles of muscle fibers together
Are fassicles visible to the naked eye, and if so what do they look like? -
CORRECTANSWER Yes fassicles are visible to the naked eye, and they appear as
parallel strands.
, What does the perimysium carry? -CORRECTANSWER Larger blood vessels, larger
nerves, and muscle spindles
What is the epimysium layer? -CORRECTANSWER The fibrous sheath that surrounds
the entire muscle
What is the fascia? -CORRECTANSWER 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? -CORRECTANSWER 1. Indirect
2. Direct
What is an indirect attachment? -CORRECTANSWER The muscle ends short of its
bony destination and the gap is bridged by a tendon.
What is a tendon? -CORRECTANSWER Fibrous band or sheet
What is direct attachment? -CORRECTANSWER 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.
Nervous Systems (Rio Salado College) ||
GRADED A+|| LATEST UPDATE 2025/26
What composes the muscular system? -CORRECTANSWER Skeletal muscles only
What is the study of the muscular system called? -CORRECTANSWER Myology
What are the 4 functions of muscles? -CORRECTANSWER 1. Movement
2. Stability
3. Control of body openings and passages
4. Heat production
Muscular movements also serve various roles in ______________. -
CORRECTANSWER Communication
Describe stability. -CORRECTANSWER 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? -CORRECTANSWER 85%
,What is the endomysium layer? -CORRECTANSWER Thin sleeve of loose connective
tissue that surrounds each muscle fiber.
The endomysium layer provides room for two things, what are they? -
CORRECTANSWER 1. Blood capillaries
2. Nerve fibers
The endomysium also provides an __________ ______________ environment for the
muscle fiber. -CORRECTANSWER extracellular chemical
Relate the endomysium tissue and excitation. -CORRECTANSWER 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? -CORRECTANSWER Thicker connective tissue sheath
that wraps muscle fibers together in bundles called fassicles.
What are fassicles? -CORRECTANSWER Bundles of muscle fibers together
Are fassicles visible to the naked eye, and if so what do they look like? -
CORRECTANSWER Yes fassicles are visible to the naked eye, and they appear as
parallel strands.
, What does the perimysium carry? -CORRECTANSWER Larger blood vessels, larger
nerves, and muscle spindles
What is the epimysium layer? -CORRECTANSWER The fibrous sheath that surrounds
the entire muscle
What is the fascia? -CORRECTANSWER 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? -CORRECTANSWER 1. Indirect
2. Direct
What is an indirect attachment? -CORRECTANSWER The muscle ends short of its
bony destination and the gap is bridged by a tendon.
What is a tendon? -CORRECTANSWER Fibrous band or sheet
What is direct attachment? -CORRECTANSWER 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.
