BIOLOGY [2 Mark Question Answer]

Sneeze Reflex: It is a type of reflex whose stimulus is in the nasal passage which causes spasmodic contraction of expiratory muscles that forcefully expel the air through the nasal passage.

Cough Reflex: It is a type of reflex whose stimulus is any foreign particle which results from deep inspiration followed by strong expiration that forcefully expels the air through the mouth.

The function of diaphragm: It helps in breathing by contracting and relaxing thereby increase and decrease the volume of the thoracic cavity. During inspiration, the diaphragm flattens while during expiration it becomes dome-shaped.

Adam's apple: It is a prominent elevation formed by the laminae of the thyroid cartilage. It is more pronounced in males than in females.

The function of turbinates: It increases the surface area so that dust particles can be removed and air become humidified.

Turbinates: The respiratory region of the nasal chamber is marked by three nasal turbinates.These are Ethmoturbinate, nasoturbinate, and maxilloturbinates.

Respiration is essential for life as energy produced during this process is utilized by the organisms to carry out various biological activities.

Respiration: It is a process of release of energy from food substances such as glucose and fats under the control of enzymes, to carry out life processes, by the living organisms.

Internal respiration: It is the transport of oxygen in the blood from the lungs to the cells and the transport of carbon dioxide from the tissue cells into the blood and to the lungs.