Q. No.There are 8 and 7 bones respectively in:
1. tarsal [ankle] and carpal [wrist]
2. carpal[wrist] and tarsal[ankle]
3. neurocranium and facial skeleton
4. facial skeleton and neurocranium
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Identify the correct characteristic of a skeletal muscle:
1. spindle-shaped cells
2. involuntary control
3. true syncytium
4. non striated
Arrange the given structures in relation to a skeletal muscle in descending order of their size:
a. whole muscle
b. muscle fiber (cell)
c. myofilament
d. myofibril
e. muscle fasciculus
| 1. a, b, e, c, d | 2. a, b, e, d, c |
| 3. a, e, b, c, d | 4. a, e, b, d, c |
The correct statement regarding myofibril would be:
1. It is the name for a muscle cell.
2. It contains sarcoplasmic reticulum.
3. It is made up of many sarcomeres.
4. It is a bundle of muscle cells.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Myosin myofilaments are
1. made up of thick and thin myofilaments.
2. found only in the H zone.
3. not seen in the H zone.
4. attached to filaments that form the M line.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Identify the correct statement:
1. Tropomyosin is found in two forms – monomeric G and polymeric F.
2. The head of the myosin molecule binds to an active site on G actin.
3. ATPase is present in troponin A.
4. Actin molecules do not move during muscle contraction.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The extensions of the cell membrane that penetrate into the centre of skeletal and cardiac muscle cells are called as:
| 1. | transverse tubule system | 2. | sarcoplasmic reticulum |
| 3. | myofibrils | 4. | terminal cisternae |
Arrange the following events in correct chronological order:
a. acetylcholine hydrolyses into acetate and choline
b. acetylcholine diffuses across the synaptic cleft
c. Impulse reaches the terminal endings of the motor neuron
d. acetylcholine binds to its receptor on motor end plate
e. sarcolemma gets depolarized
| 1. | b, c, d, a, e | 2. | c, b, d, e, a |
| 3. | c, d, b, a, e | 4. | d, e, b, a, c |
Acetylcholinesterase:
1. helps in binding of acetylcholine to its receptors.
2. catalyzes the synthesis of acetylcholine from acetate and choline.
3. stimulates receptors within the postsynaptic membrane.
4. breaks down acetylcholine.
© 2024 GoodEd Technologies Pvt. Ltd.