Blood Aupply Of The Head And Neck

Question 1

Name the 4 functions of the blood

Answer 1

1. Transport- the blood transports various substances around the body
2. Defence- prevent germs and bacteria from causing disease and infection
3. Clotting- to prevent infection specific cells form clots un areas where the skin is injured I.e cute
4. Heat regulation

Question 2

Name the 4 components of blood

Answer 2

1. Plasma- 50% of blood is made up of this.
2. Red blood cells- make up between 40-50% if the blood
3. White blood cells- to protect the body from the spread if infection
4. Platelets- when the skin is injured and exposed these cells connect together with to form a clot to prevent germs from entering the body

Question 3

Blood circulation TO the head

Answer 3

1. Occipital- supplies the scalp and back of the head with blood
2. Internal carotid artery- takes blood to the brain. Two of these at either side of the neck. The external carotid artery divides into the facial, temporal and occipital
3. Temporal branch- supplies the side of the face, head, scalp and skin with blood
4. Facial branch