Fascia - ANSWERexternal to muscles, bones, or other organs
Superficial Fascia - ANSWERunder the skin
Deep Fascia - ANSWERsurrounds deeper organs, including epimysium of muscle
Tendon sheath - ANSWERtubelike tunnel around tendon of muscle; lined with synovial membrane
Epimysium - ANSWERs...
Bio 254 Exam 2 Questions 100% Correct(RATED A+)
Fascia - ANSWERexternal to muscles, bones, or other organs
Superficial Fascia - ANSWERunder the skin
Deep Fascia - ANSWERsurrounds deeper organs, including epimysium of muscle
Tendon sheath - ANSWERtubelike tunnel around tendon of muscle; lined with synovial membrane
Epimysium - ANSWERsurrounds entire muscle
Perimysium - ANSWERConnective tissue surrounding a fascicle
Endomysium - ANSWERSurrounds individual muscle fibers
Antagonists muscles - ANSWERoppose the action of another (i.e. biceps and triceps)
Synergists muscles - ANSWERmuscles that act together; contract at the same time as the prime mover
Fixator Muscles are - ANSWERJoint stabilizers; Maintain posture or balance
Extrinsic foot muscles - ANSWERin the leg pull on tendons that insert on bones in the ankle and foot; responsible for dorsiflexion, plantar flexion, inversion, and eversion
Intrinsic Foot muscles - ANSWERlocated within the foot; responsible for flexion, extension, abduction, and adduction of the toes
Lower Extremity Muscles - ANSWERThe pelvic girdle and lower extremity function in locomotion and maintenance of stability
Aponeurosis - ANSWERBroad sheet of connective tissue that attaches coverings of adjacent muscles
Tendon - ANSWERCordlike part that attaches a muscle to a bone
Fascicle - ANSWERA small bundle of muscle fibers
The neurotransmitter released at the neuromuscular junction is - ANSWERACH What is the function of skeletal muscle tissue? - ANSWERmovement of bones, heat production, and posture
What is the function of cardiac muscle tissue? - ANSWERpump blood
What is the function of smooth muscle tissue? - ANSWERMovement in walls of hollow organs (Peristalsis, mixing of fluids)
What muscle tissues are involuntary? - ANSWERcardiac and smooth
What muscle tissues are voluntary? - ANSWERSkeletal
What muscle tissues are striated? - ANSWERskeletal and cardiac
What is the contraction style of skeletal muscle? - ANSWERRapid twitch contractions of
motor units usually summate to produce sustained tetanic contractions; must be stimulated by a neuron
What is the contraction style of cardiac muscle? - ANSWERSyncytium of fibers compress the heart chambers in slow, separate contractions ( does not exhibit tetanus or fatigue); exhibits autorhthmicity
What is the contraction style of smooth muscle? - ANSWERSingle unit: Electrically coupled sheets of fibers contract autorthymically and produce peristalsis or mixing movements
Describe the nucleus in skeletal, cardiac, and smooth muscle - ANSWERSkeletal: Many
near sarcolemma
Cardiac: Single (Sometimes double); near the center of the cell
Smooth: Single; near the center of the cell
Describe the T tubules in skeletal, cardiac, and smooth - ANSWERSkeletal: Narrow form triads with SR
Cardiac: Large diameter; forms diad with the SR, Regulates Ca++ entry into the sarcoplasm
Smooth: Absent
Describe the sarcoplasmic reticulum of skeletal, cardiac, and smooth - ANSWERSkeletal: extensive stores and releases Ca++
Cardiac: Less extensive than in skeletal muscle
Smooth: Very poorly developed
Describe cell junctions for each muscle tissue - ANSWERSkeletal: No Gap junctions
Cardiac: Intercalated disks (Gap junctions and desmosomes)
Smooth: Single unit- Many gap junctions
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