circulatory system anatomy-QP1

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what systems included under the circulatory system?

cardiovascular system lymphatics system

what's the site of gas and nutrients exchange that has terminal ends of arterioles and venues?

capillaries.

what's the directions of the transportation of blood throughout the body?

Heart>aorta>arteries>arteriole>capillary>venule>vein>vena cava>heart.

what does capillary wall have instead of the tunica media?

pericytes. Signup and view all the answers

what r the main layers of blood vessels?

tunica intima-the most inner endothelial lining tunica media-middle smooth muscles has elastic fibres tunica externa/adventitia- outermost layer that has connective tissue. Signup and view all the answers

what does the tunica intima consists of?

simple squamous epithelial cells. basement membrane sub endothelial connective tissue (support overlying cells)>function Signup and view all the answers

what does the tunica media contain?

alpha and beta adrenergic receptors ( sympathetic regulation of blood pressure). Signup and view all the answers

what is the function of the tunica externa?

anchor vessels to organs. Signup and view all the answers

the tunica externa is compromised of?

type 1 collagen elastic connective tissue (arteries) Signup and view all the answers

relate the structure of the arteries to its function?

narrowed lumen and thicker wall with special elasticity this helps to maintain the p of b moving thro the system Signup and view all the answers

Circulatory System Components

The circulatory system includes the cardiovascular and lymphatic systems.

Capillary Function

Capillaries are the site of gas and nutrient exchange between blood and tissues, connecting arterioles to venules.

Blood Flow Pathway

Blood flows from the heart to the aorta, arteries, arterioles, capillaries, venules, veins, vena cava, and back to the heart.