organising plants and animals Flashcards
what do red blood cells do?
carry oxygen
what are white blood cells?
the part of the immune system
what does plasma do?
transports CO2, hormones and waste
what do platelets do?
clump together to form blood clots
what do white blood cells do?
some produce antibodies other surround and engulf pathogens
what do arteries do?
carry blood away from the heart
what do veins do?
carry blood towards the heart
what do capillaries do?
connects arteries and veins
what does the trachea do?
carries air to /from the lungs
what do bronchioles do?
carries air to/from alveoli
what do alveoli do?
maximise surface area fishing gas exchange
what do capillaries do?
allows gas exchange between into/ out of the blood
define tissues?
a group of cells with a similar structure and function
define organs?
groups of tissues performing a specific function
what is an organ system?
organs working together to form organ systems Which work together to form an organism
give an example of an organ system
the circulatory system
give an example of an organ
the heart
what does the right ventricle do?
pumps blood into the lungs
what does the left ventricle do?
pumps blood around the rest of the body
what is a pacemaker?
controls the natural resting heart rate
what do coronary arteries do?
carry blood to the cardiac muscle
what do heart valves do?
prevent blood from flowing in the One Direction
what are stents?
metal cylinder grids which can be inserted into an artery to maintain blood flow by keeping the artery open
what are statins?
play drugs that lower harmful cholesterol in the blood and stop the Liver from producing too much cholesterol
give an example of a tissue
muscle tissue
