The total number of bones in the skeleton of girdles in adult humans is:
  •   2
  •   4
  •   6
  •   12
Identify the incorrect statement regarding the ultra-structure of a skeletal muscle:
  • Z lines bisect the I band
  • G actin is a polymer of F actins
  • A subunit of troponin masks active binding sites for myosin on the actin filament.
  • Globular head of myosin has ATPase activity.
Which of the following is not a correctly matched pair?
1. Ear ossicles Total 6 in number
2. Pubic symphysis Fibrous cartilage
3. Gliding joint Between atlas and axis vertebrae
4. Scapula Glenoid cavity
  • 1
  • 2
  • 3
  • 4
The increase of the level of which of the following in the sarcoplasm of a skeletal muscle fibre will lead to the contraction of a muscle?
  • Acetylcholine
  • ATP
  • Calcium ions
  • Troponin C
All the following are examples of synovial joints except:
  • joint between carpal bones
  • joint between adjacent thoracic vertebrae
  • joint between atlas and axis vertebra
  • joint between humerus and pectoral girdle
The facial skeleton bones in the human skull do not include:
  • Zygomatic
  • Sphenoid
  • Nasal
  • Maxilla
The ‘H-zone’ in a sarcomere:
 
  • is the central part of thick filaments not overlapped by thin filaments
  • is the peripheral part of thick filaments not overlapped by thin filaments
  • is the central part of thick filaments overlapped by thin filaments
  • is the peripheral part of thick filaments overlapped by thin filaments
The coxal bone in the human skeleton:
 
  • is a part of pectoral girdle, has a glenoid cavity that articulates with head of femur
  • is a part of pelvic girdle, has an acetabulum that articulates with head of humerus
  • is a part of pelvic girdle and is formed by the fusion of three bones
  • is a part of pectoral girdle and is formed by the fusion of three bones
Identify the incorrectly matched pair:
1. Myasthenia gravis Autoimmune disorder affecting neuro-muscular junction
2. Tetany Spasms in muscle due to high Ca++ in body fluids
3. Osteoporosis Decreased bone mass commonly due to decreased levels of estrogen
4. Gout Inflammation of joints due to accumulation of uric acid crystals

 
  • 1
  • 2
  • 3
  • 4
0:0:1


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Practice Zoology Quiz Questions and Answers