Circulatory System Basics
What is the main function of the circulatory system?
Transport oxygen, nutrients, water, and waste throughout the body
What is the heart's job in the circulatory system?
Pump blood around the body
What is the main purpose of the excretory system?
Eliminate waste from the body
What is the main purpose of sweat produced by sweat glands?
Help regulate body temperature
What type of blood is carried by (most) veins?
Deoxygenated blood
What are the three types of blood vessels in the circulatory system?
Arteries, veins, and capillaries
What are the two movements that make up a heartbeat?
Diastole and systole
What organ in the urinary system filters blood and turns waste into urine?
Kidneys
Where are sweat glands most abundant in the body?
Palms of the hands, underarms, groin, and face
What is the role of white blood cells in the circulatory system?
Protect the body from infections
Which type of blood vessel carries oxygenated blood to the rest of the body?
Arteries (and capillaries)
In which phase of the heartbeat does the heart fill with blood?
Diastole
What tube connects the kidneys to the bladder?
Uterers
Where does sweat leave the body after being produced by sweat glands?
Pores in the skin
What type of blood cells help form blood clots?
Platelets
In which part of the circulatory system does the blood exchange oxygen and carbon dioxide?
Capillaries
Example: the capillaries on the alveoli in the lungs
Which type of blood cell helps transport oxygen around the body?
Red blood cells
Which part of the excretory system stores urine before it is expelled from the body?
The bladder
How does the blood contribute to the process of sweating?
Blood capillaries bring blood to the sweat glands, where waste and water are filtered out to make sweat
How do capillaries play a role in both the circulatory and excretory systems?
Capillaries exchange substances like oxygen, carbon dioxide, nutrients, and waste between the blood and body cells, helping with both circulation and excretion
What is the difference between the pulmonary circuit and the systemic circuit?
The pulmonary circuit moves blood to the lungs, while the systemic circuit moves oxygenated blood to the rest of the body
What is plasma, and what does it carry in the blood?
The liquid part of blood, carrying water, salts, nutrients, and cellular waste
What is the role of the urethra in the excretory system?
The urethra is the tube that connects the bladder to the outside of the body, allowing urine to be released
How does sweat help with excretion besides regulating temperature?
Sweat helps eliminate waste substances, like salts and water, from the body
How does the pulmonary circuit help with gas exchange in the lungs?
The pulmonary circuit brings deoxygenated blood to the lungs where carbon dioxide is exchanged for oxygen, which is then carried back to the heart