Science - Human Anatomy and Physiology (Digest, Cardio Vas, Respir) Flashcards
mechanical digestion
breaking food into smaller pieces
chemical digestion
breaking nutrients into small molecules
hydrolysis
splitting molecules by adding water
alimentary canal
tube that goes from mouth to anus
pharnyx
throat
peristalsis
muscle contractions that push food down to stomach
what is the pH of the stomach?
2 (very acidic)
what does the liver produce?
bile
where is bile stored?
gallbladder
what does the pancreas provide?
enzymes
what is egestion?
removal from the body
what are the 4 chambers of the heart?
2 atria // 2 ventricles
systole
increase in blood pressure (heart contract)
diastole
pressure lowered (heart relaxed)
coronary circulation
blood to the heart
pulmonary circulation
blood through the lungs
systemic circulation
blood throughout body
what is plasma made up of?
hormones, ions, proteins and gases (55%)
hemoglobin
oxygen carrier
platelets
important for blood clotting
arteries
transport blood away from heart
veins
transport blood to the heart
capillaries
connect arteries and veins
larynx
voice box
alveolus
air sacs - functional unit of the lung
what is cellular respiration?
how we get energy from food we eat