17327.Which one of the following items gives its correct total number?
Cervical vertebrae in humans - 8
Floating ribs in humans - 4
Amino acids found in proteins - 16
Types of diabetes - 3
17329.Statements about the mechanism of muscle contraction are given below:
I. Acetylcholine is released when the neural signal reaches the motor end plate.
II. Muscle contraction is initiated by a signal sent by CNS via a sensory neuron.
III. During muscle contraction isotropic band gets elongated.
IV. Repeated activation of the muscles can lead to lactic acid accumulation.
Identify the correct statements.
I and IV are correct
I and III are correct
II and III are correct
I, Il and III are correct
17331.Which one of the following bones is the only movable portion of the skull?
Maxilla
Mandible
Frontal bone
Zygomatic bone
17332.Which muscle is adapted to be highly resistant to fatigue?
Cardiac
Striped
Unstriped
Voluntary
17333.Which of these is the contractile protein of a muscle?
Tubulin
Tropomyosin
Myosin
All of these
17334.Hinge joint occurs between
Humerus and pectoral girdle
Femur and pelvic girdle
Humerus and radioulnar
Skull and atlas
17335.Which one of the following is correct pairing of a body part and the kind of muscle tissue that moves it?
Iris - Involuntary smooth muscle
Heart wall - Involuntary unstriated muscle
Biceps of upper arm - Smooth muscle fibres
Abdominal wall - Smooth muscle
17337.Which one of the following is the correct matching of three items and their grouping category?
| Items | Group |
|---|---|
| Cytosine, uracil, thiamine | Pyrimidines |
| Malleus, incus, cochlea | Ear ossicles |
| Ilium, ischium, pubis | Coxal bones of pelvic girdle |
| Actin, myosin, rhodopsin | Muscle proteins |
1
2
3
4
17338.Which of the following bones make up the structure of the hand?
Metacarpal
Tarsal
Carpal
Phalanges
17339.Which joint occurs between humerus and radioulna?
Ball and socket joint
Sliding
Pivot
Hinge joint
17340.The clavicle articulates with _________ of scapula.
Acromion process
Glenoid cavity
Acetabulum cavity
Ball and socket joint
17342.Which is the largest synovial joint of the human body?
Knee joint
Shoulder joint
Elbow joint
Hip joint
17346.Which one of the following pairs is wrong about cardiac muscles?
Location - only in the heart
Function - Pumping of blood
Gap junctions - No
Striated - Yes