Tag: zoology

Questions Related to zoology

One of the reasons of the neurological disorder amongst the poors in India is due to eating of

zoology locomotion and movement disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Cicer arietinum

  2. Lathyrus sativus

  3. Pisum sativum

  4. Vigna mungo

Show answer
Correct Option: B
Explanation:

Lathyrus sativus (grass pea) causes the neurological disorder known as lathyrism or neurolathyrism. It has high concentration of neurotoxin β-oxalyl-L-α,β-diaminopropionic acid which causes paralysis. It is a poison of mitochondria which causes cell death.

So, the correct answer is 'Lathyrus sativus'.

Which of the following is an autoimmune disorder?

zoology locomotion and movement disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Myasthenia gravis

  2. Osteoporosis

  3. Muscular dystrophy

  4. Gout

Show answer
Correct Option: A
Explanation:

An autoimmune disorder is a condition where body's own immune system attacks and destroys own tissues by mistake. Myasthenia gravis is an autoimmune disorder in which body produces antibodies agaist the neurotransmitter acetylcholine nicotinic in skeletal muscles. It is characterized by the muscle weakness. 

 Disease caused by deficiency of parathormone is

zoology locomotion and movement disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Cretinism

  2. Hypercalcemia

  3. Tetany

  4. Myxoedema

Show answer
Correct Option: C
Explanation:

Tetany is rapid spasms in muscles due to low calcium ions in the body fluid or blood. Hyposecretion of parathormone lowers concentration of calcium ions in the blood due to excretion of calcium in urine, this increases the excitability of nerves and muscles, causing cramp and convulsions, this disorder is known as tetany. 

So the correct answer is 'Tetany'.

The term tetanus refers to

zoology locomotion and movement disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. The partial sustained contraction of major supporting muscles

  2. A stronger contraction resulting from multiple motor unit summation

  3. The result of wave summation, which produces a smooth and sustained contraction of a muscle

  4. The state of muscle fatigue caused by depletion of ATP and accumulation of lactic acid

Show answer
Correct Option: C
Explanation:

  • A decline in a muscle's ability to maintain a constant level of force, or tension after prolonged, repetitive stimulation is called tetanus.
  • A tetanic contraction is a sustainable contraction evoked when motor nerve innervates a skeletal muscle emitting action potential at a very high rate.
So, the correct option is 'The result of wave summation, when produces a smooth and sustained contraction of a muscle'.

Select the correct statement regarding the specific disorder of muscular or skeletal system.

zoology locomotion and movement disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  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 - Autoimmune disorder which inhibits sliding of myosin filaments

  4. Gout - Inflammation of joints due to extra deposition of calcium.

Show answer
Correct Option: B
Explanation:

A. Muscle dystrophy: It involves progressive degeneration of skeletal muscle due to a genetic defect.

B. Osteoporosis: It is a reduction in bone tissue mass causing weakness of skeletal strength. It leads to vertical compression or crushes fracture. It occurs in postmenopausal women and elderly men.
C, Myasthenia gravis: It is an autoimmune disorder that affects neuromuscular junction leading to fatigue, weakening and ultimately paralysis of skeletal muscle.
D. Gout: It is an inherited disorder of purine metabolism, occurring especially in men.
So, the correct answer is ' Osteoporosis- decrease in bone mass and higher chances of fractures with advancing age.

Repetitive muscular activity at moderate levels, such as weight training, can result in

zoology locomotion and movement disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Denervation atrophy

  2. Mood swings

  3. Muscular hypertrophy

  4. A decline in health

Show answer
Correct Option: C
Explanation:

  • Muscular dystrophy is a collection of muscle-wasting conditions. 
  • A lack of a protein called dystrophin is the main cause of muscular dystrophy.
So, the correct option is 'Muscular dystrophy'.

Symptoms of tetanus include

zoology skeleton and movements disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Muscle cramps or spasms in your legs

  2. Swollen neck

  3. Bowed legs

  4. All the above

Show answer
Correct Option: A
Explanation:
Tetanus is caused by the bacterium Clostridium tetani (C tetani). It is a  fatal disease of the nervous system caused by nerve toxins released by the bacterium.
Symptoms of tetanus include: 
a)Tetanus often begins with mild spasms in the jaw muscles known as lockjaw. The spasms can also affect the facial muscles and experience spasms and stiffness in various muscles, especially those in jaw, abdomen, chest, back, and neck.
b)Muscle cramps or spasms in your legs.
c)Difficulty swallowing.
d)fever, high blood pressure, nervous system dysfunction, or sweating.
Hence symptoms of tetanus include Muscle cramps or spasms in your legs.
So, the correct option is 'Muscle cramps or spasms in your legs'.

Metabolic arthritis is commonly called

zoology skeleton and movements disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Rheumatism

  2. Gout

  3. Tuberculosis

  4. Cancer

Show answer
Correct Option: B

Sprain involves

zoology skeleton and movements disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Overstretching of ligament

  2. Overstretching of tendon

  3. Dislodging of bone

  4. Both A and B

Show answer
Correct Option: A
Explanation:

A sprain is a stretching or tearing of ligaments which are the tough bands of fibrous tissue that connect two bones together in the joints. The most common causes of sprains are falling, twisting etc. These types of injuries may cause the joint to move out of its normal range of movement that causes the tearing or stretching of the ligament. So, the correct answer is 'Overstretching of ligament'.

Sprain is due to outstretching/pulling of

zoology skeleton and movements disorders of musculoskeletal system disorders of muscle and skeleton joints and movements

  1. Muscles

  2. Tendons

  3. Ligaments

  4. Nerves

Show answer
Correct Option: C
Explanation:

A sprain is a stretching or tearing of ligaments which are the tough bands of fibrous tissue that connect two bones together in the joints. A sprain results in an overstretch or tear of the ligaments supporting that joint. 

So, the correct answer is 'ligaments'.