respiratory

respiratory system

taking in oxygen

removing carbon dioxide through breathing.

It works closely with the circulatory system to undergo diffusion.

components

It includes organs such as the lungs, trachea, and diaphragm that facilitate gas exchange and maintain homeostasis.

functions

Bring oxygen into the body

Removes carbon dioxide (a waste product),

Enable speech (via vocal cords)

regulating blood pH and

supply oxygen to muscles during physical activity(working with ccirulatory)

gas exchange

Occurs in the alveoli:

• Oxygen moves from alveoli → capillaries (into blood)

• Carbon dioxide moves from capillaries → alveoli (to be exhaled)

This process is called diffusion.

Breathing process ( inhalation / insparation)

• Diaphragm contracts (moves down)

• Chest cavity expands

• Air is drawn into lungs

breathing process (exhalation/ expiration)

• Diaphragm relaxes (moves up)  chest cavity shrinks oxygen withdraws from lungs This process helps in removing carbon dioxide from the body.

respiratory in reponse to excersize

• Breathing rate, tidal volume, oxygen uptake, increases

• efficient gas exchange - work closely with circulatory system - supply oxygen to working muscles