General
✓✗The light bands of a myofibril contain
- troponin only
- myoglobin
- myosin
- actin
General
✓✗Muscles of the back used for maintaining posture over long periods are expected to be rich in
- red fibres with myoglobin and mitochondria
- white fibres with little myoglobin
- fibres without sarcoplasmic reticulum
- fibres without mitochondria
General
✓✗A fracture of the bone that lies between the 2nd and 7th ribs on the dorsal side of the thorax would affect the
- sternum
- humerus
- clavicle
- scapula
General
✓✗Ribs 8, 9 and 10 do not articulate directly with the sternum but join the
- vertebral column at both of their ends
- clavicle through white fibrous cartilage
- eleventh rib through hard bone
- seventh rib through hyaline cartilage
General
✓✗The length of the thin and thick filaments during contraction
- decreases for both
- increases
- decreases for thick filaments only
- remains the same
General
✓✗Select the correct option.
- The 8th, 9th and 10th pairs of ribs articulate directly with the sternum.
- Every rib joins the thoracic vertebrae dorsally and the sternum ventrally.
- There are 7 vertebrosternal, 3 vertebrochondral and 2 vertebral rib pairs.
- The 11th and 12th pairs of ribs join the sternum by hyaline cartilage.
General
✓✗Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The A band keeps its length during muscle contraction.
Reason (R): The thick filaments do not change their length during contraction.
In the light of the above statements, choose the correct answer from the options given below.
Assertion (A): The A band keeps its length during muscle contraction.
Reason (R): The thick filaments do not change their length during contraction.
In the light of the above statements, choose the correct answer from the options given below.
- Both Assertion and Reason are true and Reason is the correct explanation of Assertion
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- Assertion is true but Reason is false
- Both Assertion and Reason are false
General
✓✗Which of the following lies in the centre of an I band?
- M line
- A band
- Z line
- H zone
General
✓✗Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The 11th and 12th pairs of ribs are called floating ribs.
Reason (R): They are not connected ventrally.
In the light of the above statements, choose the correct answer from the options given below.
Assertion (A): The 11th and 12th pairs of ribs are called floating ribs.
Reason (R): They are not connected ventrally.
In the light of the above statements, choose the correct answer from the options given below.
- Both Assertion and Reason are true and Reason is the correct explanation of Assertion
- Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- Assertion is true but Reason is false
- Both Assertion and Reason are false
General
✓✗When calcium ions are pumped back into the sarcoplasmic cisternae,
- the cross bridges become permanent and fixed
- the A band shortens to half its length
- the H zone disappears from every sarcomere
- actin is masked again and the Z lines return
General
✓✗Which of the following is not a synovial joint?
- Joint between carpals
- Joint between atlas and axis
- Joint between flat skull bones
- Knee joint
General
✓✗In which of the following do the vertebrae of a region fuse to form a single bone?
- Thoracic and lumbar regions
- Cervical region only
- Cervical and thoracic regions
- Sacral and coccygeal regions
General
✓✗Gout is the inflammation of joints due to the accumulation of
- lactic acid in muscles
- uric acid crystals
- calcium oxalate in the kidney
- urea in blood
General
✓✗Which of the following statements about red muscle fibres are correct?
A. They have a high content of myoglobin.
B. They have plenty of mitochondria.
C. They are called aerobic muscles.
D. They have a high amount of sarcoplasmic reticulum.
Choose the correct answer from the options given below.
A. They have a high content of myoglobin.
B. They have plenty of mitochondria.
C. They are called aerobic muscles.
D. They have a high amount of sarcoplasmic reticulum.
Choose the correct answer from the options given below.
- A and D only
- A, B and D only
- A, B and C only
- B, C and D only
General
✓✗Which of the following muscular disorders is inherited?
- Muscular dystrophy
- Tetany
- Botulism
- Myasthenia gravis