Internal Environment & Lymphatic System
This fluid surrounds body cells?
Interstitial fluid
The liquid part of blood that is mostly water?
Plasma
Blood vessels that carry blood away from the heart?
Arteries
High blood pressure is also called this?
hypertension
Organs that filter blood and produce urine?
kidneys
The ability of the body to maintain stable internal conditions?
Homeostasis
Blood cells responsible for transporting oxygen?
Red Blood Cells
Blood vessels that contain valves to prevent backflow?
Veins
Hardening and narrowing of arteries?
arteriosclerosis
The functional unit of the kidney?
nephron
This system returns excess fluid to the blood and helps defend the body?
Lymphatic system
These cells defend the body against infection?
White blood cells
Tiny vessels where gas and nutrient exchange occurs?
capillaries
A heart attack is medically called this?
myocardial infarction
Tube that carries urine from kidney to bladder?
ureters
Small bean-shaped structures that filter microorganisms?
Lymph nodes
Cell fragments that help stop bleeding?
Platelets
The contraction phase of the cardiac cycle?
systole
Name ONE healthy habit to protect the circulatory system.
Possible answers: exercise, drink water, avoid smoking, low-fat diet, low salt intake.
The process where the kidneys filter blood to form urine?
filtration
The organ where T lymphocytes mature?
Thymus
The universal blood donor type?
O negative
The system in which blood passes through the heart twice in one circuit?
double circulation
Disease caused by low red blood cells?
anaemia
Name ONE waste product removed by the excretory system?
Possible answers: urea, uric acid, carbon dioxide, toxins.