Page 18 - SAAT BIOLOGY PART 2

SAAT BIOLOGY MR.MOHAMED ELGAYAR MRPROF.NET

• Left ventricle: pumps oxygenated blood to the body

through aorta (the largest artery)

Remember: the sinoatrial node (pacemaker) are located in

the right atrium.

Arteries: carries oxygenated blood to the other body parts.

Veins: carries deoxygenated blood back to the heart, it

contains valves

▪ Circulatory System & Endocrine System

▪ BLOOD COMPONENTS:

PLASMA: yellowish fluid that makes up 50% of blood

RED BLOOD CELLS: they do not have a nucleus.

They consist of an iron-containing protein called

hemoglobin, which carry oxygen to the body's cells

WHITE BLOOD CELLS: fight diseases

PLATELETS: have a role in blood clotting

MRPROF.NET MR.MOHAMED ELGAYAR MRPROF.NET@GMAIL.COM