University:
Western Sydney University
Course:
MEDI 2003 | Clinical Sciences 2
Academic year:

2024
Views:

476

Pages:

2
Author:

Mariam A. A.

Aorta 1. 2. 3. 4. 5. Ascending aorta Arch of the aorta (upper limbs, head and neck) Descending aorta (thoracic cavity) Abdominal aorta (abdominal cavity) Common iliac arteries (pelvic cavity and lower limbs) Ascending aorta ● Coronary arteries are the first and only branches that come off the aorta ● Branches into the left and right coronary artery ● Originates from the left ventricle Arch of the aorta (upper limbs, head and neck) ● Brachiocephalic artery (R) - One single blood vessel that splits into 2 ● Left common carotid artery Common means it will split/divide - Carotid (both the left and right) will split into internal (in the skull) and external (not in the skull) ● Left subclavian artery Clavicle = collarbone Descending aorta (thoracic cavity) ● Many branches extending laterally on the left and right ● Intercostals - they embed themselves in the ribs and they supply blood to the muscles that move the ribs during breathing ● There are holes in the diaphragm that allow the aorta to pass through into the abdominal and pelvic cavity ● Sits on the side of the vertebral column, off the midline towards the left side of the body Abdominal aorta (abdominal cavity) ● Celiac trunk (foregut) → stomach, liver, gallbladder and spleen ● Superior mesenteric artery (midgut) → small intestine and first 2/3 of the large intestine (ascending, transverse and first part of the descending) ● Inferior mesenteric artery (hindgut) → last part of the descending colon, sigmoid column and rectum ● Renal arteries ● Gonadal arteries ● When it passes through the diaphragm it is called the abdominal aorta (still the same blood vessels just a name change) ● Some arteries are bilateral (go to the left and right) → renal, gonadal and common iliac ● Some are central (come off to the front), to supply the organs in front of the abdominal aorta → organs are in front because it sits towards the back near the vertebral column ● Fore, mid, hind → blood is supplied by an individual artery (central artery) Common iliac arteries (pelvic cavity and lower limbs) ● Internal iliac arteries (stays in the pelvic cavity) ● External iliac arteries (branches into the lower limbs) ○ Femoral arteries ○ Popliteal arteries ● Becomes the common iliac artery when the vertebral column ends and it branches to the left and right (bilateral) ● Common means branches into the lower limbs