Tag: muscle contraction

Questions Related to muscle contraction

Organ of Golgi is the sensing structure formed at the junction of

biology locomotion and movement locomotion in animals bones and movements muscle contraction types of muscles muscles

  1. Two nerves

  2. Two bones

  3. Nerve and muscle

  4. Muscle and tendon

Show answer
Correct Option: D
Explanation:
Organ of Golgi. also known as Golgi tendon organ is a kind of proprioreceptor that sense stimulus within the body. It receives information from the tendons and sense tension in muscles. These kind of receptors get activated when the muscles stretch or contract due to any activity. These receptor are made up of collagen strands and formed at the junction of muscle and tendon.
So, the correct answer is 'Muscle and tendon'.

During strenuous muscular activity, hydrogens removed from sugar molecules are accepted temporarily by .......... to form..........        

biology locomotion and movement locomotion in animals bones and movements muscle contraction types of muscles muscles

  1. oxygen; water

  2. pyruvate; lactic acid

  3. myoglobin; carbaminohaemoglobin

  4. oxygen; carbon dioxide

Show answer
Correct Option: B
Explanation:

During the strenuous muscular activity, hydrogens removed from sugar molecules are accepted temporarily by pyruvate to form lactic acid.

So, the correct option is 'pyruvate; lactic acid'.

Upon stimulation of skeletal muscles, calcium is immediately made available for binding to troponin from

biology locomotion and movement locomotion in animals bones and movements muscle contraction types of muscles muscles

  1. Wood

  2. lymph

  3. sarcoplasmic reticulum

  4. bone

Show answer
Correct Option: C
Explanation:

Upon stimulation of skeletal muscles, calcium is immediately made available for binding to troponin from 'sarcoplasmic reticulum'.

Exoskeleton is mesodermal in

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. Mammals

  2. Birds

  3. Fishes

  4. Fishes, crocodiles and chelones

Show answer
Correct Option: A
Explanation:
  • The protective or supporting structure covering the outside of the body of many animals is called the exoskeleton. 
  • The exoskeleton is mesodermal in mammals.
  • So, the correct answer is 'Mammals'

The term "innominate" is used for?

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. A bone and an artery

  2. A bone and a vein

  3. A bone and a nerve

  4. A vein and a nerve

Show answer
Correct Option: A
Explanation:
The term innominate means unnamed or anonymous. It is often used to refer to certain anatomical structures that have a descriptive name rather than precise ones. In humans this termed is used to refer to the hip bone and brachiocephalic artery.
Hence, the correct answer is 'A bone and an artery'.

Animals can be distinguished in to chordates and non chordates depending on presence and absence of _________.

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. Three germ layers

  2. Mesoderm

  3. Notochord

  4. Both B and C

Show answer
Correct Option: C
Explanation:

The animals having notochord further develop a skeleton as in vertebrates. Animals without notochord have no skeleton as in invertebrates.

An example of chitinous exoskeleton is

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. Oriole

  2. Sea stars

  3. Clam

  4. Honeybee

  5. Earthworm

Show answer
Correct Option: D
Explanation:

  • A tough, semitransparent substance that is the main component of the exoskeletons of arthropods, such as the shells of crustaceans and the outer coverings of insects(honey bee). 
  • Chitin is also found in the cell walls of certain fungi and algae. Chemically, it is a nitrogenous polysaccharide (a carbohydrate). Hence, An example of a chitinous exoskeleton is Honeybee.
So, the correct answer is 'Honeybee'.

Endoskeleton of cell is

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. Cell wall

  2. Endoplasmic reticulum

  3. Cytoplasm

  4. Mitochondria.

Show answer
Correct Option: B

Cockroaches have an outer skeleton.

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
An exoskeleton is the external skeleton that supports and protects an animal's body. Examples of animals with exoskeletons include insects such as grasshoppers and cockroaches, and crustaceans such as crabs and lobsters.
Cockroaches are winged insects found in nearly every part of the world. Like most other insects, cockroaches have an exoskeleton, meaning their skeleton is located on the outside of their bodies. They have three simple body parts: the head, thorax, and abdomen.
Hence, the answer is true.

Which one of the cartilage helps in early birth of a child,
without damage to the pelvic girdle

biology movement and locomotion in man locomotion in animals bones and movements muscle contraction

  1. Hyaline cartilage

  2. Elastic cartilage

  3. Calcified cartilage

  4. Fibrous cartilage

Show answer
Correct Option: D
Explanation:

During the birth of child pubic symphysis which is made up of fibrous cartilage relaxes inaeasing`the space for the exit of the child.