Respiratory & Circulatory System (Circulatory System: The circulatory…
Respiratory & Circulatory System
: The circulatory system brings nutrients and oxygen to all of the body’s cells, removes waste from cells, and regulates the body’s temperature.
Platelets - clotting (make a scab)
white blood cells (WBC’s) - fight infection
red blood cells (RBC’s) - carry oxygen + carbon dioxide
Carry CO2 from the body’s cells to the lungs (waste)
Carry O2 from the lungs to the body’s cells (feed)
Red blood cells are the main cells involved with gas exchange
Cells in the blood include:
Plasma is the liquid component of blood
Blood is composed of plasma and cells.
The left chambers receive oxygenated blood from the lungs and pump it to the body
The right chambers receive deoxygenated blood from the body and pump it to the lungs.
Left and Right Ventricle
Left and Right Atrium
The human heart has four chambers:
: The respiratory system is a series of tubes that brings oxygen into the body and gets rid of carbon dioxide
↑ volume = ↓ pressure
This allows air into the lungs
The pressure in the lungs decreases.
The chest cavity gets bigger.
The chest muscles contract.
This pushes air out of the lungs
↓ volume = ↑ pressure
The pressure in the lungs increases.
The chest cavity gets smaller.
The chest muscles relax.