Heart
Chamber that blood first enters into from the body.
What is right atrium?
Vessels that carry blood away from the heart.
What are arteries?
The pacemaker of the heart.
What is the SA node?
These four components make up human blood, each with a unique role in transport, defense, clotting, or volume.
What are plasma, red blood cells, white blood cells, and platelets?
This dome-shaped muscle plays a key role in initiating inhalation by contracting and increasing thoracic cavity volume.
What is the diaphragm?
Function of the bicuspid (mitral) valve.
What is prevents backflow from left ventricle to left atrium?
The function of capillaries.
What are the exchange of gases, nutrients, and waste?
This branch of the autonomic nervous system increases heart rate during stress or exercise.
What is the sympathetic nervous system?
This feature found on red blood cells determines an individual's ABO blood type.
What are A and B antigens?
This is the site in the lungs where gases are exchanged between the air and the blood.
What are the alveoli?
Difference between pulmonary and systemic circulation.
What is pulmonary goes to lungs, systemic to the body?
Causes of high blood pressure.
What is high blood viscosity, vasoconstriction, increased blood volume, and stress.
An increase in this gas in the blood signals the heart to beat faster to help remove it.
What is carbon dioxide?
This blood type is known as the universal recipient because it lacks both anti-A and anti-B antibodies.
What is type AB blood?
This structure closes over the trachea during swallowing to prevent food from entering the airway.
What is the epiglottis?
Steps of blood flow through the heart (list in order).
What is Body → right atrium → right ventricle → lungs → left atrium → left ventricle → body?
Role of valves in veins.
What is to prevent backflow of blood as blood is moving toward the heart against gravity.
This part of the nervous system slows the heart rate using the neurotransmitter acetylcholine.
What is the parasympathetic nervous system?
A person with this blood type produces only anti-A antibodies.
What is type B blood?
This occurs during physical activity due to increased cellular respiration, which raises CO₂ levels and oxygen demand.
What is an increased breathing rate?
Coronary artery disease affects of blood flow and treatment.
What is reduces flow due to plaque and treated with lifestyle changes, meds, stents, or bypass?
This component of blood is responsible for buffering pH, transporting hormones and nutrients, and maintaining osmotic balance, yet it’s not a cell.
What is plasma?
The P wave of an EKG represents the electrical activity that causes the atria to contract.
What is atrial depolarization?
This process begins when platelets form a plug and ends with the stabilization of a clot by fibrin.
What is blood clotting?
This physiological change at high altitudes helps increase oxygen delivery to tissues despite lower atmospheric oxygen levels.
What is increased red blood cell production?