During inspiration, the diaphragm
expands
shows no change
contracts and flattens
relaxes to become dome- shaped
C.
contracts and flattens
Breathing or Respiration or Ventilation is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment.
Breathing in is called inspiration or inhalation and breathing out is called expiration or exhalation. During inspiration, the diaphragm contracts putting backwards by partial flattening and increase the thoracic cavity lengthwise.
Contractile vacuole in protozoan Amoeba is meant for
respiration
excretion
locomotion
osmoregulation
Which of the following is important for muscle contraction and nerve impulse transmission?
Ca2+ ions
Mg2+ ions
Both (a) and (b)
Fe2+ ions
Which one is component of Ornithine cycle?
Ornithine, citrulline and alanine
Ornithine, citrulline and arginine
Amino acid are not used
Ornithine, citrulline and fumaric acid
The leucocytes contain which of the following in large quantity?
Basophils
Neutrophils
Eosinophils
Monocytes
The function of pineal body is to
lighten the skin colours
control sexual behaviour
regulates the period of puberty
All of the above
