BLOOD VESSELS

Question 1

are hollow, tube-like structures that form a complex network throughout the body. They carry blood to and from the heart, delivering oxygen and nutrients to the tissues and removing waste products.

Answer 1

Blood vessels

Question 2

FUNCTIONS OF BLOOD VESSEL

They ensure continuous circulation, maintaining homeostasis by supporting vital body functions like oxygen transport, nutrient delivery, and waste removal.

Question 3

ARTERIES
 Arteries carry blood away from the heart.

 The aorta is the main artery in systemic circulation.

 Arteries branch into smaller arteries to reach different parts of the body.

Question 4

CAPILLARIES – SITE OF EXCHANGE

 Arterioles lead to capillary beds.

 Capillaries are tiny vessels where oxygen, nutrients, and waste
are exchanged with tissues.

 Capillaries are just wide enough for a single red blood cell to pass through.

Question 5

VEINS

Are blood vessels that are part of the circulatory system located throughout your body that collect oxygen poor-blood and return it to your heart, except pulmonary veins.

 Hold the most blood in your body, nearly 70-75%.

 Have thinner and less muscular walls than arteries.

Question 6

Each vein is made of three layers of tissues and fibers:

is primarily composed of connective tissue that gives structure and shape to your vein.

Answer 6

tunica adventitia (outer layer)

Question 7

Each vein is made of three layers of tissues and fibers:

contains smooth muscle cells that allow your vein to get wider or narrower as blood passes through.

Answer 7

The tunica media (middle layer)

Question 8

Each vein is made of three layers of tissues and fibers:

has a lining of smooth endothelial cells, allowing blood to move easily through your vein with valves inside it.

Answer 8

tunica intima (inner layer)

Question 9

TYPES OF VEINS:

Answer 9

Deep veins
Superficial veins
Perforating veins

Question 10

• these veins can be found in your muscles and along your bones. Your deep veins do the important work of moving your oxygen-poor blood back to your heart.

Answer 10

Deep veins

Question 11

• are generally smaller than your deep veins. Like deep veins, they contain valves. Unlike deep veins, they’re
  not surrounded by muscle.

Answer 11

Superficial veins

Question 12

• are sometimes called connecting veins or perforator veins.

Answer 12

Perforating veins

Question 13

FACT ABOUT VEIN:

Many people think that veins are blue because they look blue through our skin. But that’s just a trick that our eyes play on us. Your veins are actually full of dark red blood — darker than the blood in your arteries, which is cherry red.