Blood
Cause blood to clot when a blood vessel is damaged
Platelets
An increased volume of blood enters the ventricle, causing it to stretch, and consequently it contracts with more force.
Frank-Starling mechanism?
What is the major function of the respiratory system?
Gas exchange (CO2 and O2)
A hormone that prepares the body for physical activity by increasing heart rate and energy availability.
Adrenaline
What is the body's largest blood vessel that transports blood from body back to the heart?
Vena Cava
pressure in your arteries when your heart contracts
systolic blood pressure
Which is inferior: atria (atriums) or ventricles?
Ventricles.
We need oxygen in our cells to complete:
a) photosynthesis
OR
b) cellular respiration
B) cellular respiration
ṼO₂ = Q × a-vO₂ difference
Fick Equation
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
A reduction in volume of this due to heat can cause cardiac drift
Plasma
deoxygenated blood is transported away from the heart to the lungs and oxygenated blood returns to the heart
Pulmonary circulation
Which lung has two lobes? Which has three lobes?
left; right
The redirection of blood flow to prioritize oxygen delivery to active muscles.
Vascular Shunting
Part of the brainstem that regulates vital functions such as heart rate and breathing.
Medulla Oblongata
A protein in red blood cells that transports oxygen from the lungs to tissues.
Hemoglobin
Arteries carry blood AWAY from the heart and veins carry blood TOWARDS the heart. True or false?
True!
Describe the pathway air takes to enter our body all the way to the alveoli.
nasal cavity - pharynx - larynx - trachea - bronchi - bronchioles - alveoli
Baroreceptors play a crucial role in controlling
Blood pressure
A cluster of cells in the heart that sets the pace of the heartbeat. (Full name)
sinoatrial node
Blood pressure is measured in
millimetres of mercury
What is the primary pacemaker of the heart?
Sinoatrial node
What is the relationship between pressure and volume changes that causes air to flow in and out of the lungs?
When our diaphragm contracts, it allows more volume to enter our lungs. This causes a decrease in pressure that allows air to enter our lungs since it moves from high to low pressure.
They detect an increase in carbon dioxide
chemoreceptors
Anticipatory Rise is caused by an increase in activity from the
Sympathetic nervous system.