The Heart And Blood Vessels Flashcards
What takes place in the right ventricle?
Gas exchange
What does the left ventricle do?
Pumps blood around the rest of the body
The heart is an ________ that pumps blood around the body in a ________ circulatory system
Organ
Double
What are artificial pacemakers?
Electrical devices used to control irregularities in the heart rate
What is the natural resting heart rate controlled by?
A group of cells located in the right atrium that acts as a pacemaker
What are the three types of blood vessel?
Arteries
Veins
Capillaries
What needs to be maintained for efficient gas exchange?
A high concentration gradient in the alveoli of the lungs
Diffusion needs energy.
True or False?
False.
Diffusion DOESN’T need energy
What does oxygen and haemoglobin make?
Oxyhaemoglobin
How are the lungs adapted for gas exchange?
Alveoli specifically
- The alveoli are very thin-one cell thick
- Covered by a network of fine capillaries, enabling gas to pass almost directly between the lungs and bloodstream
- Large combined surface area, allowing large amounts of gas to be exchanged with each breath
Aorta takes blood ___ the body
Pulmonary artery takes blood to the _____
_______ _____ brings blood from the body
Pulmonary vein brings blood from the ____
To
Lungs
Vena cava
Lungs
What is a coronary artery?
An artery supplying blood to the heart
What is another name for the trachea?
Windpipe
What are the bronchi the main passage to?
The lungs
What takes place within the alveoli?
Gas exchange
Why is the alveolis capillary network important?
Each alveolus is surrounded by capillaries which ensure a good blood supply. This is important as the blood is constantly taking oxygen away and bringing in more carbon dioxide - which helps to maintain the maximum concentration gradient between the blood and the air in the alveoli.
As the bronchi start to divide and get smaller and closer to the lung tissue, what are they called?
Bronchioles
What is the rate calculation for blood flow?
Time
______ _________
Pulmonary ________
A______
Pulmonary _________
Vena cava
Artery
Aorta
Vein
______ _________
Pulmonary ________
A______
Pulmonary _________
Vena cava
Artery
Aorta
Vein
