The characteristics and an example of a synovial joint in humans are:
Characteristics | Examples | |
1. | Fluid-filled between two joints, provides cushion | Skull Bones |
2. | Lymph filled between two bones, limited motion | Gliding joint between carpals |
3. | Fluid-filled synovial cavity between two bones | Joint between atlas and axis |
4. | Fluid cartilage between two bones, limited motion | Knee joint |
Select the correct matching of the types of the joint with the example in the human skeletal system:
Types of joint | Examples | |
1. | Cartilaginous joint | between frontal and parietal |
2. | Pivot joint | between third and fourth cervical vertebrae |
3. | Hinge joint | between the humerus and pectoral girdle |
4. | Gliding joint | between carpals |
1. 1
2. 2
3. 3
4. 4
Stimulation of a muscle fiber by a motor neuron occurs at:
1. the neuromuscular junction
2. the transverse tubules
3. the myofibril
4. the sarcoplasmic reticulum
Select the correct statement with respect to locomotion in humans:
1. | Accumulation of uric crystals in joints causes inflammation |
2. | The vertebral column has 10 thoracic vertebrae |
3. | The joint between adjacent vertebrae is a fibrous joint |
4. | The decreased level of progesterone causes osteoporosis in old people |
The H-zone in the skeletal muscle fibre is due to:
1. | The central gap between myosin filaments in the A-band. |
2. | The central gap between actin filaments extends through myosin filaments in the A-band. |
3. | Extension of myosin filaments in the central portion of the A-band |
4. | The absence of myofibrils in the central portion of the A-band. |
Select the correct statement regarding the specific disorder of muscular or skeletal system.
1. | Muscular dystrophy - age-related shortening of muscles |
2. | Osteoporosis- decrease in bone mass and higher chances of fractures with advancing age |
3. | Myasthenia gravis- an autoimmune disorder which inhibits the sliding of myosin filaments |
4. | Gout- inflammation of joints due to extra deposition of calcium |
Low Ca2+ in the body fluid may be the cause of:
1. tetany
2. anaemia
3. angina pectoris
4. gout
Elbow joint is an example of:
1. Pivot joint
2. Hinge joint
3. Glinding joint
4. ball and socket joint
Which one of the following is the correct matching of three items and their grouping category?
Items | Group | |
1. | Malleus, incus cochlea | Ear ossicles |
2. | Ilium, ischium, pubis | Coxal bones of pelvic girdle |
3. | Actin, myosin rhodopsin | Muscle proteins |
4. | Cytosine, uracil thiamine | pyrimidines |
In human body, which one of the following is anatomically correct?
1. | Floating ribs-2 pairs | 2. | Collar bones-3 pairs |
3. | Salivary glands-1 pair | 4. | Cranial nerves-10 pairs |