Cardiovascular - Blood Distribution Flashcards
Aorta arch divides into what three divisions?
- Branchiocephalic trunk
- Left common carotid artery
- Left subclavian artery
What does the brachiocephalic trunk divide into?
- Right subclavian artery
- Right common carotid artery
Where do the common carotid arteries supply blood?
Supply blood to face, beck, and brain
Where is the vertebral artery? Where does it supply blood?
At the back of neck
Supplies brain through medulla oblongata
What is the carotid sinus?
Has baroreceptors that detect bp (where we check someone pulse on their neck)
Right subclavian artery contains what 4 arteries?
- Axillary artery
- brachial artery
- radial artery
- ulnar artery
Does the ulnar and radial arteries fuse?
Yes, they fuse in the hand
What does the thoracic aorta branch into?
Phrenic artery (diaphragm)
What are the branches for the abdominal aorta?
- Adrenal arteries = adrenals
- renal arteries = kidneys
- gonadal arteries = gonads
- lumbar arteries = vertebrae, spinal cord, and abdominal wall
What does the celiac trunk supply?
Liver, stomach, gallbladder, spleen, pancreas
What does the superior mesenteric artery supply?
Pancreas, duodenum, small and large intestines
What does the inferior mesenteric artery supply?
Terminal portions of colon and rectum
What does the aorta divide into to supply legs with blood? What do they supply
Right and left common iliac arteries
Supply pelvic organs and medial thigh
What does the iliac artery become as it descends the leg?
Femoral artery and then popliteal artery and tibial arteries
How many sets of peripheral veins?
One deep and one superficial (both for body temp)
How do superficial and deep veins play a role in body temp?
Hot weather = blood in superficial veins dilate to allow heat loss
Cold weather = blood in deep veins constrict to minimize heat loss
How does deoxygenated drain back into the heart? (SVC & IVC)
IVC = areas inferior to diaphragm
SVC = areas diaphragm and above
Which veins drain into superior vena cava?
- Jugular vein (head and neck)
- vertebral vein (cervical spinal cord, posterior surface of skull)
- ulnar & radial vein
- brachial & axillary vein
- subclavian vein
Veins from hand to superior vena cava in order?
Ulnar and radial vein -> brachial vein -> axillary vein and cephalic merge -> subclavian vein and jugular vein merge -> brachiocephalic vein -> right and left brachiocephalic vein merge to form superior vena cava
What is the hepatic portal circulation?
Carries blood from digestive organs to liver for processing before returning to systematic circulation via inferior vena cava
What three veins makes up hepatic portal vein?
- Splenic and gastric vein
- Superior mesenteric vein
- Inferior mesenteric vein
What does the splenic and gastric vein drain?
Collects blood from stomach, spleen and pancreas
What does the superior mesenteric vein drain?
Collects blood from stomach, small intestine, and 2/3 of large intestine
What does the inferior mesenteric vein drain?
Collects blood from 1/3 of large intestine and rectum
How does the lower limbs drain blood? In what order?
Tibial, fibular, popliteal and small saphenous veins -> femoral vein + great saphenous vein join -> iliac vein
What do lumbar veins drain?
Spinal cord and muscles of body wall
What do hepatic veins drain?
Sinusoids of liver
What do adrenal veins drain?
Adrenal glands
What do renal veins drain?
Kidney
What do gonadal veins drain?
Ovarian and testicular veins
How is the brain supplied blood?
Circile of willis and arterial supply
What are the three types of arteries you can find in the brain?
- Internal carotid arteries
- posterior cerebral arteries
- Vertebral arteries
What does the internal carotid artery divide into? What do they supply?
Anterior and middle cerebral arteries
Supply most of the cerebrum
The vertebral arteries join to form what? What does it supply
Basilar artery
Brain stem & cerebellum
The basilar arteries divide into what? What do they supply
Posterior cerebral arteries
Supply posterior cerebrum
What are anterior and posterior blood supplied unit by to communicate?
Small arterial branches
