Quizlet Blood Vessels

Question 1

Blood is carried away from the heart by?

Answer 1

systemic and pulmonary arteries

Question 2

Which of the following arteries is a branch of the brachiocephalic trunk?

Answer 2

right subclavian

Question 3

Which artery enters the skull through the foramen magnum?

Answer 3

vertebral

Question 4

Which of the following arteries is/are NOT a branch(es) of the aorta?

Answer 4

pulmonary arteries

Question 5

The _______ is the part of the aorta that passes through the diaphragm

Answer 5

descending aorta

Question 6

The circle of Willis provides blood supply to the _______.

Answer 6

Brain

Question 7

The basilar artery is formed by the union of the _______ arteries.

Answer 7

Vertebral

Question 8

Which of the following vessels return blood directly into the inferior vena cava?

Answer 8

hepatic veins and common iliac veins

Question 9

The longest vein in the human body is the _______.

Answer 9

great saphenous

Question 10

Which of the following veins is/are most responsible for draining blood from the head?

Answer 10

internal jugular

Question 11

Which of the following is the largest artery in the thigh?

Answer 11

Femoral

Question 12

If your total blood volume is 5 liters, the volume in your veins and venules at any given time is about _______.

Answer 12

3 liters

Question 13

Contraction of skeletal muscles in the leg causes blood to be pumped toward the heart because?

Answer 13

proximal valves open and distal valves close

Question 14

Which type of blood vessel is primarily responsible for control of systemic vascular resistance on a moment-to-moment basis?

Answer 14

arterioles

Question 15

The most immediate result of increased skeletal muscle contraction and increased respiratory rate (activating the “respiratory pump”) would be?

Answer 15

Increase venous return to the heart

Question 16

Stimulation of baroreceptors in large arteries of the head and neck, triggers sympathetic stimulation of vascular smooth muscle, resulting in?

Answer 16

Vasoconstriction

Question 17

If blood pressure drops, negative feedback mechanisms trigger?

Answer 17

ncreased heart rate, stroke volume, and vasoconstriction

Question 18

Which of the following chemical changes in blood is least likely to activate chemoreceptors (in aorta and carotids) to signal the cardiovascular center to increase heart rate?

Answer 18

High blood level of O2

Question 19

The blood that flows to the left arm passes through the _______.

Answer 19

left subclavian artery

Question 20

The right radial and right ulnar arteries are branches of the right _______ artery

Answer 20

Brachial

Question 21

True or false: The kidneys are supplied with blood from branches of the celiac artery.

Answer 21

False

Question 22

The precapillary sphincters

are structures that regulate the flow of blood to what?

Answer 22

The capillaries

Question 23

True or false: The greater the diameter of the lumen of a blood vessel, the lower the resistance to blood flow through that vessel.

Answer 23

True

Question 24

True or false: When blood pressure increases, the cardiovascular center responds by increasing parasympathetic stimulation and decreasing sympathetic stimulation.

Answer 24

True

Question 25

The ability of a tissue to adjust it's blood flow is called what?

Answer 25

Autoregulation

Question 26

Blood flows through the blood vessels because of the establishment of what?

Answer 26

A pressure gradient

Question 27

Supplying additional fat tissue with blood may raise blood pressure because of an increase in what?

Answer 27

Total vessel length

Question 28

What is formed by reuniting capillaries?

Answer 28

Venules

Question 29

What are the medium-sized vessels capable of high degree of vasoconstriction and vasodialation called?

Answer 29

muscular arteries

Question 30

Elastic arteries are very stretchable and able to do what?

Answer 30

Recoil

Question 31

What regulates the blood flow in the capillaries?

Answer 31

the arterioles

Question 32

Filteration of substances out of capillaries occurs when the capillary blood pressure is _______ and blood colloid osmotic pressure is ______.

Answer 32

High, low

Question 33

Which hormones have opposite effects on blood pressure?

Answer 33

ADH (antidiuretic hormone) and ANP (atrial natriuretic peptide)

Question 34

True or false: Walls of arteries are generally thicker and contain more elastic tissue than walls of veins.

Answer 34

True

Question 35

Blood flows slowly through the capillaries to permit what to occur between the blood and body cells?

Answer 35

efficient exchange of nutrients an wastes

Question 36

What leads to the lungs?

Answer 36

Pulmonary trunk

Question 37

What returns blood from the lungs to the heart?

Answer 37

the pulmonary vein

Question 38

Will an increase in cardic output increase or decrease blood pressure?

Answer 38

Increase it

Question 39

Will hemorrhage increase or decrease blood pressure?

Answer 39

Decrease it

Question 40

Will vasodialation increase or decrease blood pressure?

Answer 40

Decrease it

Question 41

Will vasoconstriction increase or decrease blood pressure?

Answer 41

Increase it

Question 42

Aldosterone affects blood pressure by increasing reabsoption of what by the kidneys?

Answer 42

Sodium ions and water

Question 43

Venous return to the heart is enhanced by the pressure difference from venules to what?

Answer 43

Left ventricle

Question 44

Paralysis called “ lock Down syndrome” conscious but unable to move

Answer 44

Basilar stroke

Question 45

Safety mechanism if one of the arteries gets blocked, still provides the brain with blood

Answer 45

Circle of Willis