Exchange and Transport in Animals Flashcards

1
Q

Fick’s Law

Definition

A

The rate of diffusion
= conc gradient x surface area/ diffusion distance

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

Why is excess Carbon dioxide in the blood bad?

A

It causes the blood to become acidic and denatures enzymes in the blood because the pH is too high

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

What are the different ways that substances can move in our out of cells?

A
  • Osmosis
  • Diffusion
  • Active tranport
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the substances that must be delivered to all cells in the body?

A
  • Oxygen
  • Amino acids
  • Glucose
  • Water
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the substances that must be removed from cells in the body?

A
  • Urea
  • Carbon dioxide
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the requirements needed for efficient gas exchange?

A
  • Steep concentration gradient of carbon dioxide and oxygen
  • Short diffusion distance
  • Large surface area
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the soluble components found in the blood?

A
  • Mineral ions
  • Glucose
  • Oxygen
  • Carbon dioxide
  • Amino acids
  • Urea
  • Antibodies
  • Hormones
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Adaptations of Red Blood Cells

A
  • Biconcave shape to carry more oxygen
  • No nucleus allows for more haemoglobin to carry more oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Adaptations of White Blood Cells

A
  • Phagocytes - Have a flexible and divided nucleus
  • B-lymphocytes - Have lots of ribosomes and mitochondria
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are Platelets + What are they used for?

A

What they are:
* Fragments of cells

What they are used for?
* Clotting blood

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

What is Plasma?

A

The liquid part of blood that carries blood cells around the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the lumen?

A

The hole in the tubes of blood vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the Capillaries?

A

A blood vessel where substances go in and out of the blood

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

What are the Arteries?

A

A blood vessel that carries oxygenated blood away from the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the Veins?

A

A blood vessel that carries de-oxygenated blood back to the heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Adaptations of the Arteries

A
  • Can expand and constrict to control bloodflow
  • Have collagen in the walls for strength
  • Have 3 layers of thick walls
17
Q

What is the endothelial tissue?

A

A wall layer of the blood vessels that is one cell thick

18
Q

Adaptations of the Veins

A
  • Have valves to ensure that the blood doesn’t flow backwards
  • Large diameter lumen
  • Thin walls to reduce blood flow resistance
19
Q

Adaptations of Capillaries

A
  • Very branched to increase surface area for faster diffusion rate
  • Have a constant blood supply to maintain concentration gradient
  • Have leaky walls to allow liquid to escape and bathe cells in order to exchange molecules with them
20
Q

Heart rate

Definition

A

The number of times the heart beats in a minute

21
Q

Stroke volume

Definition

A

The volume of blood being pushed into the aorta each time the left ventricle contracts

22
Q

Cardiac output

Definition

A

The volume of blood being pushed into the aorta each minute

23
Q

Cardiac output

Equation

A

Cardiac output
= stroke volume x heart rate

24
Q

What is the Vena Cava?

A

A vein that bringes de-oxygenated blood to the heart

25
Q

What do the Atrioventricular Valves do?

A

Ensure that blood goes down from the atria to the ventricles

26
Q

What is the Septum?

A

It seperates the left and right sides of the heart

27
Q

What are the Tendons/ Heartstrings?

A

They are attached to valves to prevent them from inverting

28
Q

What is the Pulmonary Vein?

A

A vein that carries oxygenated blood into the left atrium

29
Q

What is the Pulmonary Artery?

A

An artery that carries de-oxygenated blood out of the right ventricle

30
Q

What is the double circulatory system made up of?

A
  • The Pulmonary circulation
  • The Systematic circulation
31
Q

What is Pulmonary circulation?

A

Blood is circulated throught the lungs where it is oxygenated

32
Q

What is Systematic circulation?

A

Blood is circulated through all other parts of the body except the lungs where it unloads oxygen

33
Q

How many times does blood pass through the heart in one circuit?