Respiratory organs in humans - class-XII
|Description: respiratory organs in humans|
|Number of Questions: 15|
|Created by: Anumati Koshy|
|Tags: respiratory system of human respiratory system human organ systems digestive system, respiratory system and circulatory system breathing and exchange of gases human system organization of life breathing for energy human body and organ system structure and functions of living organisms -ii the respiratory system our body- its internal organ system human physiology biology breathing and respiration|
The trachea is prevented from collapsing by
- The trachea is a rigid tube that conducts air from your larynx to your bronchi.
- The trachea's rigidity is maintained by a series of incomplete cartilaginous rings arranged along its length called C-shaped cartilage rings. Hence, The trachea is prevented from collapsing by Incomplete cartilaginous rings.
Which of the following correctly illustrates the passage of oxygen in the respiratory system?
- The pathway of air through the respiratory system is through
The short tube leading from the nose is
- The pharynx, or throat, is the passageway leading from the mouth and nose to the oesophagus and larynx.
- The pharynx permits the passage of swallowed solids and liquids into the oesophagus, and conducts air to and from the trachea, or windpipe, during respiration.
- The pharynx also connects on either side with the cavity of the middle ear by way of the Eustachian tube and provides for equalization of air pressure on the eardrum membrane, which separates the cavity of the middle ear from the external ear canal. Hence, The short tube leading from the nose is pharynx.
- The diaphragm is a part of the abdominopelvic cavity.
- It is located below the thoracic cavity and above the pelvic cavity.
- Its dome-shaped roof is the thoracic diaphragm, a thin sheet of muscle under the lungs, and its floor is the pelvic inlet, opening into the pelvis. Hence, the diaphragm is a dome-shaped muscle.
Air goes from pharynx to.
- The nasal cavity and the mouth meet at the pharynx, or throat, at the back of the nose and mouth.
- From there, air quickly enters the second part of your respiratory system, the trachea or windpipe.
- The trachea is a tube that delivers air to the lungs, the third and most important part of your respiratory system. Hence, Air goes from the pharynx to. trachea.
Bronchi divide into
- The bronchi (or bronchus) are the air passages into the lungs that begin at the end of the trachea.
- There are two bronchi, one for each lung.
- The bronchus divides into smaller branches known as segmental bronchi, which divide again into bronchioles, Hence, Bronchi divide into bronchioles.
Major part of $CO _2$ is transported to respiratory surface as.
Respiratory system is derived from.
What is correct about human respiration?
Hypophysial portal system is present in
Direct respiration occurs in.
Which is not function of 'conductiing part' of respiratory system?
Choose the correct statements with regard to human respiration:
(a) Inspiration is faciliated by contraction of phrenic and internal intercostal muscles
(b) Healthy human can inhale or exhale about $2000-3000$ml of air/min
(c) Functional residual capacity represents the volume of left out air in lungs after expiration
(d) Total lung capacity is the total volume of air that would be accomodated in the lunds after forced inspiration.
Respiratory quotient for three different substrates was calculated and tubulated as shown here.
Identify X, Y and Z and select the correct option regarding them.
Respiratory quotient if the protein is 0.8-0.9
Which of the following can be considered as odd one?