Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

3. P.E. > Blood & Blood Vessels > Flashcards

Blood & Blood Vessels Flashcards

1
Q

Flashcard Question

A

Flashcard Answer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the Functions of Blood ?

A
  • Transportation of gases
  • fuels and minerals
  • Protection against dehydration
  • Maintaining equilibrium - regulating temperature
  • Thermoregulation
  • Fighting infection - carrying cells and antibodies
  • Bringing waste products to the kidneys and liver - for filtering and cleaning
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How long does a Blood Cell take to circulate around the body at rest ?

A

approx. 20 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How much of your total body weight is made up of blood ?

A

approx 8%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the Components of Blood ?

A

55% Plasma and 45% Blood Cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the Components of Plasma ?

A

90% Water, 7% Proteins, 3% Other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are Erythrocytes ?

A

Red Blood Cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are Leucocytes ?

A

White Blood Cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are Thrombocytes ?

A

Platelets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the composition of Blood Cells ?

A

99% Red, and 1% mix of White and Platelets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Describe Red Blood Cells

A
  • Gives the blood its colour
  • Produced in bone marrow
  • Contain Haemoglobin
  • Removal of Carbon Dioxide
  • Carries the oxygen to the body tissues and muscles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Describe White Blood Cells

A
  • Fights Infection
  • Absorbs and digests disease causing organisms
  • Produced in Bone Marrow, lymph tissue and the spleen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Describe Platelets

A

Cells that help form blood clots to stop bleeding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describe Plasma

A
  • Fluid the carries nutrients
  • Transports Waste Products
  • Assists with waste Removal from the Body
  • Protein-Salt Solution
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe Haemoglobin

A
  • Protein Molecule
  • Oxygen binds to molecule within the bloodstream
  • Carries both Oxygen and Carbon dioxide to and from the lungs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe Systolic Blood Pressure

A

Measures pressure on the arteries as blood leaves the heart and is being pumped forcefully

17
Q

Describe Diastolic Blood Pressure

A

The pressure on the veins as blood returns to the heart after having been to all body parts

18
Q

What are Blood Vessels

A

Make up the vascular network through which all blood flows to all parts of the body

19
Q

How many types of blood Vessels are there ?

A

3

20
Q

Name the three major types of blood vessels

A

Arteries
Capillaries
Veins

21
Q

Describe Arteries

A
  • Carry blood away from the heart.

- Large blood vessels with thick walls.

22
Q

Describe Capillaries

A
  • Allow the exchange of gasses and nutrients & wastes between the blood and the tissues.
  • Tiny Blood Vessels.
  • High density - more sites for gaseous exchange, increased oxygen to working muscles, increased aerobic contribution reducing fatigue
23
Q

Describe Veins

A

Carry blood back to the heart. Not very elastic and contains pocket valves.

24
Q

What are Precapillary Sphincters ?

A
  • Miniature structures that control blood flow through the capillaries
  • Forceful contraction can close the branches off to blood flow
  • while opening others
  • Can turn blood flow on and off
25
Q

Describe Blood Pressure

A

Pressure exerted by arterial blood against vessel walls

26
Q

Describe Systolic Blood Pressure

A

Recorded during contraction phase of the heart cycle

27
Q

Describe Diastolic Blood Pressure

A

Recorded during the relaxation phase of the heart cycle

28
Q

What is Systemic Blood Flow ?

A

Arteries and veins feed blood from the heart to the bod and back to the heart again

29
Q

What is Vasoconstriction ?

A
  • contraction in the smooth muscle around the blood vessels

- less blood moving through capillaries and more blood being redirected to where Vasodilation is occurring.

30
Q

What is Vasodilation ?

A
  • Relaxation in the smooth muscle surrounding the blood vessels
  • Widening of blood vessels resulting in an increase of blood
31
Q

Define Myoglobin

A

Molecule in the muscle that attracts the oxygen into the muscle cell before binding to it for transport within the muscle to the mitochondria

32
Q

What is Arteriovenous oxygen difference (aVO2) ?

A

Difference in oxygen concentration between arterial and venous blood.

33
Q

What does Arteriovenous oxygen difference (aVO2) measure ?

A

It measures the amount of oxygen taken up from the blood by the tissues.

34
Q

How is Arteriovenous oxygen difference (aVO2) measured ?

A

Expressed as millilitres per 100mL of blood

35
Q

What happens to Arteriovenous oxygen difference (aVO2) during exercise ?

A

During exercise the blood flow to the tissues increases, increasing the arteriovenous oxygen difference to widen.

3. P.E. (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions