Blood Vessels Arteries and Veins Flashcards
Return blood to the heart.
Veins
Carry blood away from the heart.
Arteries
What are the 3 parts of the aorta?
- Ascending aorta
- Aortic arch
- Descending aorta
What are the 3 major vessels that the aortic arch branches off into?
- Brachiocephalic trunk
- Left common carotid artery
- Left subclavian artery
2 branches of the brachiocephalic trunk?
- Right subclavian artery
- Right common carotid artery
Formed by the internal carotid artery, anterior and posterior cerebral arteries, (but not middle) and communicating arteries.
Circle of Willis
NOT part of the circle of Willis
Middle cerebral arteries
Begins at T5 and extends to T12.
Thoracic aorta
Begins inferior to diaphragm.
Abdominal aorta
Receives blood from organs in the superior part of the body (neck, head, chest, shoulders, and upper limbs)
Superior vena cava
Receives blood from organs inferior to the diaphragm (Abdominal organs and lower limbs)
Inferior vena cava
Exchanges nutrients, wastes and gases (O2/CO2) between fetal and maternal blood.
Placenta
Functions of Umbilical arteries?
- Blood enters umbilical cord from the internal iliac arteries of fetus.
- Carries fetal blood to the placenta (This blood is O2 poor and CO2 rich)
- Become lateral bladder ligaments
Functions of Umbilical vein?
- Carries blood from the placenta through the umbilical cord to the fetus (This blood is O2 and nutrient rich)
- Umbilical vein drains into the ductus venosus
- Ductus venosus drains into the inferior vena cava
- Umbilical vein becomes the round ligament of the liver
What are the 3 shunts of the fetal heart?
- Ductus venosus
- Foramen ovale
- Ductus arteriosus
