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MCQ prep questions from CMTO with Correct Answers| Verified
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MCQ prep questions from CMTOwith Correct Answers| Verified
The cell membrane of a muscle cell is known as the________ and the cytoplasm is called __________ -
✔✔sarcolemma
sarcoplasm
Sarcoplasm also contains many tubular protein structures called - ✔✔myofibrils,
There are 3 types of myofilament; - ✔✔thick, thin, and elastic.
Thick myofilaments are made from - ✔✔myosin, a type of motor protein,
thin myofilaments are made from - ✔✔actin, another type of protein used by cells for structure.
Elastic myofilaments are composed of a s - ✔✔pringy form of anchoring protein known as titin.
muscle contractions of striated muscle cells are regulated by calcium ion concentration, which is in
turn regulated by a structure known as the - ✔✔sarcoplasmic reticulum
Skeletal muscle cells also contain two regulatory proteins, known as - ✔✔troponin and tropomyosin.
The calcium ions being released from the SR is an end result of a chain of events in the contraction cycle
started by an action potential triggering the release of - ✔✔acetylcholine (ACh), a neurotransmitter.
, where do you see gap junctions - ✔✔cardiac mm
satellite cells (nurse cells) - ✔✔are present in cardiac muscle. These are myogenic cells which act to
replace damaged muscle, although their numbers are limited. Satellite cells are also present in
skeletal muscle cells.
Smooth muscle cells are spindle-shaped and contain a - ✔✔single central nucleus.
Smooth muscle cells are responsible for - ✔✔involuntary contractions and are found in the walls
of blood vessels and hollow organs such as the gastrointestinal tract, uterus , and bladder.
Superficial ligaments of wrist - ✔✔Palmar aponeurosis
Radial Collateral
Triangular Fibrocartiage complex
Flexor Retinaculum
Deep ligaments of wrist - ✔✔Palmar Radiocarpal Ligaments
Palmar Ulnocarpal Ligaments
Palmar Intercarpal Ligaments
Palmar Carpometacarpal Ligaments
Ulnar sided intrinsic ligaments - ✔✔Capitohamate ligaments
Lunotriquetral ligaments
Palmar Ulnar Extrinsic ligaments: - ✔✔Ulnotriquetral ligaments
Ulnolunate ligaments
-Identify the intrinsic and extrinsic ligaments associated with each joint and describe their functions.
- ✔✔
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