The capacity of lungs for air in a healthy man is about
500 ml
1000 ml
2000 ml
3000 ml
Correct Answer :
D. 3000 ml
Related Questions
The medullary inspiratory centre is always under direct control of
chemicals
physical conditions
nerves
all of these
The functional unit of the lung is
neuron
alveolus
bronchus
none of these
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
The respiratory disease immediately related to cigarette smoking is
hypercapnia
pulmonary edema
hypoxia
emphysema
The regulatory centre for respiration is situated in the
cerebral cortex
hypothalamus
medulla oblongata
procencephalon
The respiratory portion of the respiratory tract consists of
Pharynx, larynx, trachea, bronchi and bronchioles
Trachea, bronchi, bronchioles, alveolar ducts and alveoli
Respiratory bronchioles, alveola ducts, alveolar sacs and alveoli
Bronchi, bronchioles, alveolar ducts, alveolar sacs and alveoli
All are lung diseases except
asthma
pericarditis
bronchitis
pneumonia
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 maximum volume of inspirable air is called
vital capacity
residual volume
inspiratory capacity
any of these
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 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
Air directly enters the tracheae via the
external nares
pharynx
larynx
bronchi
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
In all vertebrates, the oxygen transport is through
haemocyanin
haemoglobin
myoglobin
haemoerythrin
The substances undergoing slow oxidation in the body during respiration are known as
Oxidases
Metabolites
ATP
ADP
In response to high altitude hypoxia supply of oxygen to the tissue is maintained by
increased alveolar ventilation and increased cardiac output
shift in the haemoglobin dissociation curve to the right
increased erythrocytes and haemoglobin content of blood
all of these
Oxygen is transported to every cell of the body through
RBC
WBC
Both (a) and (b)
RBC and hormones
The vibrations of which of these membranes produces vocal sounds?
Glottis
Vocal cords
Vocal sacs
Epiglottis
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
Oxygen will diffuse through a membrane only if it is
moist
immersed in water
very thin
vascular
The condition in which the body suffers from acute oxygen shortage is called
anaemia
deoxygenation
detoxification
hypoxia
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 process of breathing-in of oxygen rich air from outside is called
expiration
inspiration
respiration
oxidation
In rabbits, respiration takes place in
Cells lining the lung cavities
Cells found in blood
All living cells of the body
RBC only
The membrane covering the lungs is
conjunctiva
pleura
meninges
peritoneum
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 capacity of lungs for air in a healthy man is about
500 ml
1000 ml
2000 ml
3000 ml
Tissue respiration is a process by which
carbohydrates are synthesised
proteins are broken down
fat molecules are metabolised
energy is liberated
The opening into the wind pipe or trachea is called
larynx
epiglottis
glottis
bronchi
The metal associated with haemoglobin is
Copper
Magnesium
Iron
Manganese