Which of the following is not associated with muscular dystrophy?

  • Progressive degeneration of skeletal muscles

  • It is a genetic disorder

  • Affects neuromuscular junction and cause tetany

  • Both 2 and 3

Tetany is not associated with

  • Rapid spasms

  • Wild relaxations in muscles

  • Low calcium ions in body fluids

  • Both 2 and 3

Arthritis is

  • Inflammation of joints

  • Inflammation of forelimbs

  • Inflammation of muscles

  • Inflammation of ligaments

Which of the following is not associated with Osteoporosis?

  • Age related disorder

  • Characterised by decreased bone mass

  • Increased chances of fractures

  • Increased level of estrogen is a common cause

Which of the following seen in Gout?

  • Inflammation of joints due to accumulation of uric acid crystals

  • Inflammation of bones due to accumulation of uric acid crystals

  • Inflammation of joints due to accumulation of calcium

  • Inflammation of joints due to accumulation of estrogens

Low Ca2+ in the body fluid may be the cause of

  • tetany
  • anaemia
  • angina pectoris
  • gout

Select the correct statement with respect to locomotion in humans:

  • Accumulation of uric crystals in joints causes their inflammation

  • The vertebral column has 10 thoracic vertebae.

  • The joint between adjacent vertebrae is a fibrous joint 

  • The decreased level of progesterone causes osteoporosis in old people

Low Ca2+ in the body fluid may be the cause of

  • tetany

  • anaemia

  • angina pectoris

  • gout

Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I                                Column II
I. Acetabulum                        1. Pectoral girdle
II. Glenoid cavity                   2. Pelvic girdle
III. Vertebrosternal ribs          3. 7 pairs
IV. vertebrochondral ribs        4. 3 pairs
Codes:
      I    II   III   IV

  • .   1    2    3    4
  • .   2    1    4    3
  • .   2    1    3    4
  • .   1    2    4    3 

Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I                        Column II
(type of lever)                (example)
I. First class                   1. Joint between first vertebra and skull
II. Second class              2. Human body resting on toe
III. Third class                3. Elbow joint
Codes:
      I     II    III

  • .   1     2     3
  • .   2     1     3
  • .   2     3     1
  • .   3     2     1

In the given diagram of the lower limb bones of a human, a sesamoid bone is depicted by the letter:

  • A
  • B
  • C
  • D

In the molecule shown in the given diagram, ATPase activity is present in:

  • A
  • B
  • C
  • D

What masks the active sites for myosin head present on the actin myofilaments?

  • Light meromyosin
  • Heavy meromyosin
  • G – actin
  • Troponin

Ribs 11 and 12 are called floating ribs because they

  • do not articulate with the vertebrae
  • attach only indirectly to the sternum
  • have no connection to the sternum
  • do not articulate directly with any other bone

The depression on the coxa where the head of the femur articulates is the

  • acetabulum.
  • auricular surface.
  • iliac fossa.
  • ischial tuberosity.

The ability of a muscle fiber action potential to cause an increase in cytosolic calcium concentration is dependent upon

  • The conduction of action potentials down T-tubules which are in intimate contact with the sarcoplasmic reticulum.
  • The presence of the voltage sensitive protein called the ryanodine receptor in the T-tubule membrane
  • The calcium channel protein called the dihydropyridine receptor which is located in the sarcoplasmic reticulum membrane
  • Ca++-ATPase pumps in the sarcoplasmic reticulum

When a skeletal muscle shortens during contraction which of these statements is false?

  • The l-band shortens
  • The A-band shortens
  • The H-zone becomes narrow
  • The sarcomeres shorten

Which of the following is not the feature of red muscle fibres

  • They have plenty of mitochondria
  • They have high content of Myoglobin
  • They have high amount of Sarcoplasmic reticulum
  • They are called aerobic muscles

During resting stage the binding site of actin for myosin remains masked by

  • Troponin                2. Gactin
  • 2
  • Tropomyosin          4. Meromyosin

  • 4

Calcium is important in skeletal muscle contraction because it

  • Detaches the myosin head from the actin filament
  • Activates the myosin ATPase by binding to it
  • Binds to troponin to remove the masking of active sites on actin for myosin
  • Prevents the formation of bonds between the myosin cross bridges and the actin filament

A motor unit consists of:

  • A motor neuron and all the muscle fibers innervated by it
  • All the motor neurons innervating one muscle fiber
  • All the muscle fibers in a fasciculus
  • All the muscle fibers in a skeletal muscle

Myasthenia gravis is an autoimmune disease in which antibodies are formed against:

  • Myelin sheath
  • Articular cartilage
  • Neuro-muscular junctions
  • Thyroid follicle

The first carpo-metacarpal joint is a/an:

  • Saddle joint             
  • Ellipsoidal joint
  • Pivot joint               
  • Fibrous joint

The central part of the thick myofilaments, not overlapped by thin filaments, is called the:

  • Z line         
  • M line
  • I band       
  • H zone

Vertebrochondral ribs attach to the seventh rib with the help of:

 

  • Elastic cartilage

  • Hyaline cartilage

  • Fibrous cartilage

  • White fibrous tissue

Myosin head cleaves ATP for:

  • Formation of cross bridges

  • Breaking of cross bridges

  • Both 1 and 2

  • Neither 1 nor 2

Vitamin D deficiency in an adult causes the condition known as _____.

  • rickets

  • osteoporosis

  • osteomalacia

  • giantism

The number of correct statements amongst the given statements is:

I. Cardiac muscles are striated and involuntary.

II. Myosin head is an active ATPase enzyme.

III. The neurotransmitter released at the neuromuscular junction is acetylcholine.

IV. White muscle fibers depend on anaerobic process for energy.

V. Functional unit of muscle contraction is the sarcomere.

  •     2       

  •     3

  •     4       

  •     5

In the given diagram of the human skull, the bones represented by the letters A, B and C are respectively

               

  •           Sphenoid, Ethmoid and Lacrimal

  •           Ethmoid, Sphenoid and Lacrimal

  •           Sphenoid, Lacrimal and Ethmoid

  •           Ethmoid, Lacrimal and Sphenoid

Match each item in Column I with one in Column II and choose your answer from the codes given below:
       Type of joint            Example
       A. Hinge            a. First carpo-metacarpal
       B. Pivot              b. Between the carpals
       C. Gliding           c. Atlanto-axial
       D. Saddle           d. Knee joint

            A.    B.    C.     D.
   

   

   

   

  •      d     c      b      a

  •      c     d      b      a

  •      c     b      d      a

  •      d     b      a      c

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Practice Zoology Quiz Questions and Answers