A patient presents with muscle weakness and fatigue. Biochemical analysis reveals a defect in the calcium-binding protein crucial for muscle contraction, specifically within the thin filaments. Which protein is MOST likely affected?
Tropomyosin
Troponin T
Troponin I
Troponin C
Related Questions
Troponin is a
Digestive enzyme
Muscle protein
High energy reservoir
Water soluble vitamin
What is the approximate number of muscle present in human body?
21
96
1042
640
Which of the following has alternate striations and is branched?
Biceps under autonomous control
Iris muscle under control of will
Heart muscle involuntary
Muscle of visceral organs under autonomous control
Which of the following is INCORRECT regarding the structure of skeletal muscle?
Myofibrils are composed of bundles of muscle fibers.
The sarcolemma is the plasma membrane of a muscle fiber.
The sarcoplasmic reticulum stores and releases calcium ions.
T-tubules are invaginations of the sarcolemma.
Which muscle component is the smallest among the given options?
Muscle fibre
Myofibril
Actin
Sarcomere
The store house of calcium ions in the muscle fibre is
Smooth endoplasmic reticulum
Golgi body
Sarcoplasmic reticulum
Lysosomes
I. Myoglobin in very less quantity
II. Appear pale or whitish
III. Mitochondria are very few
IV. Sarcoplasmic reticulum in large quantity
Given characteristics of muscles fibres be long to
White fibres
Green fibres
Red fibres
Pink fibres
Which of the following statements is true with reference to the structure of a muscle fibre?
H-zone is present in the middle of A-band
A-band is present in the middle of sarcomere
M-line is present in the middle of H-zone
All of the above
Muscle is attached to bone by
Tendon
Ligament
Insertion
Cartilage
The sliding filament theory explains the mechanism of:
Nerve impulse transmission
Muscle contraction
Bone growth
Hormone secretion
