The opening into the wind pipe or trachea is called
larynx
epiglottis
glottis
bronchi
Correct Answer :
C. glottis
Related Questions
The maximum volume of inspirable air is called
vital capacity
residual volume
inspiratory capacity
any of these
The term used to denote the difference in volume between the total lung capacity and the vital capacity is
tidal volume
ventilation rate
residual volume
all of these
In frog, the alveoli are surrounded by
flattened and ciliated cells to increase the surface area of lungs
columnar and ciliated cells to increase the surface area of lungs
only ciliated cells to increase the surface area of lungs
only squamous cells to decrease the surface area of lungs
The impulses reaching voluntary muscles for forced breathing originate from
medulla oblongata
spinal cord
vagus nerve
cerebrum
Pulmonary artery
returns highly oxygenated blood to the left heart for distribution throughout the body
returns highly oxygenated blood to right heart for distribution throughout the body.
delivers blood to lungs low in oxygen
delivers highly oxygenated blood in lungs
The metal associated with haemoglobin is
Copper
Magnesium
Iron
Manganese
The "mountain sickness" in persons climbing to high attitudes without the aid of oxygen cylinders is due to
lack of sufficient amount of haemoglobin
lack of sufficient amount of erythrocytes
arterial hypoxia
anaemic hypoxia
Oxygen will diffuse through a membrane only if it is
moist
immersed in water
very thin
vascular
Which of the following can respire in total absence of air (anoxyliosis)?
Amoeba
Bed bug
Hydra
Tapeworm
The rate of respiration is lowest at
sleeping
running
eating food
playing
The process of breathing-in of oxygen rich air from outside is called
expiration
inspiration
respiration
oxidation
Ciliated epithelium in the trachea of mammals helps in
sucking-in air
pushing expired air out
pushing mucus out
keeping the alveolar air in circulation
The oxygen content of expired air in man is
3 per cent
25 per cent
16 per cent
20 per cent
The carbon dioxide pressure in the lung capillaries is
less than that in alveolar air
more than that in alveolar air
equal to that in alveolar air
similar to oxygen pressure in the capillaries
The iron containing haemoglobin pigment is a
protein
polysaccharide
enzyme
none of these
The rate and depth of breathing is primarily controlled by medulla by
the oxygen content of the blood
the nitrogen content of the blood
receptors in the larynx
the carbon dioxide content of the bkxxl
Oxygen is transported to every cell of the body through
RBC
WBC
Both (a) and (b)
RBC and hormones
In a man at rest the body's cells consume approximately
5000 ml of oxygen per day
5000 ml of oxygen per hour
500 ml of oxygen per hour
200 ml of oxygen per minute
To take air into the lungs, the diaphragmmust be
dome shaped
oblique
flattened
normal
Internal respiration refers to
exchange of gases between lungs and blood
cellular respiration
exchange of gases between lungs and atmosphere
respiration in open air
The condition in which the body suffers from acute oxygen shortage is called
anaemia
deoxygenation
detoxification
hypoxia
Colour of oxyhaemoglobin is
dull red
bluish red
bright red
dull brown
During inspiration in mammals, the diaphragm shall
Contract
relax
expand
shows no change
The substances undergoing slow oxidation in the body during respiration are known as
Oxidases
Metabolites
ATP
ADP
The respiratory tubes devoid of car-tilagenous rings are
trachea
bronchi
bronchioles
none of these
The medullary inspiratory centre is always under direct control of
chemicals
physical conditions
nerves
all of these
The respiratory disease immediately related to cigarette smoking is
hypercapnia
pulmonary edema
hypoxia
emphysema
The greatest volume of air that can be expired after a maximum inspiratory affect, is its
residual volume
tidal volume
vital capacity
lung volume
The membrane covering the lungs is
conjunctiva
pleura
meninges
peritoneum
Diaphragm is characteristic of
egg-laying mammals only
marsupial mammals only
eutherian mammals only
all the mammals