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CAAPS EXAM REVISION OE COMPLETE QUESTIONS AND ANSWERS (VERIFIED)
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CAAPS EXAM REVISION OE COMPLETE QUESTIONS AND ANSWERS (VERIFIED)
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CAAPS EXAM REVISION OE COMPLETE QUESTIONSAND ANSWERS (VERIFIED)
What is Skeletal muscle?
ANSWER = striated and voluntary movement
What is smooth muscle?
ANSWER = nonstriated, involuntary muscle
What is cardiac muscle?
ANSWER = heart muscle
What are the types of movement?
ANSWER = -Flexion/Extension/ Hyperextension
-Dorsiflexion/plantar flexion
-Circumduction
-Pronation/Supination
- Adduction/Abduction
,-Protraction/Retraction
-Eversion/inversion
-Roation
What is endomysium?
ANSWER = a thin layer of connective tissue that surrounds each muscle fiber
What is perimysium?
ANSWER = connective tissue sheath surrounding each muscle fascicles.
What is Epimysium?
ANSWER = Dense CT that surrounds an entire muscle
What is the A band?
ANSWER = -actin and myosin
-Overlapping thin and thick filament
What is the H band?
ANSWER = -The centre part of the sarcomere that gets smaller when a muscle contracts and appears
when the muscle relaxes
-Central area of myosin filaments
,-No Cross bridges
What is Actin?
ANSWER = -Thin filament protein.
-Twisted into a double helix and appears like a double-stranded chain of pearls.
-Contains the myosin-binding site.
What is tropomyosin?
ANSWER = It is a long, fibrous protein that winds around the actin polymer, blocking all the myosin-
binding sites.
What is Troponin?
ANSWER = A regulatory protein that moves tropomyosin aside & exposes myosin binding sites when
Ca+ is released during muscle contraction
What is Myosin?
ANSWER = Thick filament protein with a head and elongated tail, the heads form cross bridges with the
thin filaments during muscle contraction
What is the sarcoplasmic reticulum?
ANSWER = -The endoplasmic reticulum of a muscle cell
-Stores Ca2+ ions
, what are t-tubules?
ANSWER = Tunnel-like structures that run deep into the cell.
The AP spreads along the membrane and into the t tubules. They allow for rapid delivery of the AP deep
inside the cell to the SR.
What are fast twitch fibers?
ANSWER = Muscle fibers developed 3x faster than slow - used for brief, rapid, powerful contractions
What are glycolytic fibers?
ANSWER = -White fibres - few mitochondria, abundant glycogen stores, little myoglobin and capillary
networking
-Larger tension for short duration (fatigue and lactic acid)
-Anerobic glycolysis to produce ATP
What are the contractile proteins?
ANSWER = myosin (thick filament) and actin (thin filament)
What are slow twitch fibers?
ANSWER = contract slowly (10x longer) with great endurance, abundant mitochondria, myoglobin, rich
blood supply, oxidative phosphorylation
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