Groups of organs with specific structures and functions work together as systems, which interact with other systems in the body.
Technologies that are used to maintain human health have social and economic benefits and costs.
Environmental factors, including natural factors and those resulting from human activity, can have a wide range of effects on human health.
E1.1 analyse the social or economic impact of a medical device or technology related to the treatment of the human circulatory, respiratory, or digestive system (e.g., a pacemaker, a heart- lung bypass machine, kidney dialysis) [AI, C]
E1.2 analyse the impact of various lifestyle choices on human health and body systems (e.g., the impact of excessive alcohol consumption on the liver; of smoking on the respiratory system; of loud noise on the auditory system)
E2.1 use appropriate terminology related to animal anatomy, including, but not limited to: systolic contraction, diastolic pressure, diffusion gradient, inhalation, exhalation, coronary, cardiac, ulcer, asthma, and constipation [C]
E2.2 use medical equipment (e.g., a stethoscope, a sphygmomanometer) to monitor a human system, and interpret the data collected [PR, AI]
E2.3 plan and conduct an inquiry to determine the effects of specific variables on the human body (e.g., the effects of exercise and rest on heart rates) [IP, PR, AI]
E2.4 perform a laboratory or computer-simulated dissection of a mammal to identify organs, and explain the relationships between the structures and functions of body systems [PR, AI]
E3.1 describe the anatomy and physiology of the circulatory system (including the atrium, ven- tricles, valves, aorta, pulmonary artery, vena cava, capillaries, veins, arteries, blood cells, and platelets), the mechanisms of blood pressure, and the function of the spleen
E3.2 describe the anatomy and physiology of the respiratory system (including the nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli, and oxygenated and deoxygenated blood) and the mechanisms of gas exchange and respiration
E3.3 describe the anatomy and physiology of the digestive system (including the mouth, epiglottis, esophagus, stomach, intestines, liver, and pancreas), the mechanisms of peristalsis, absorption, and mechanical and chemical digestion, and the function of the kidneys
E3.4 explain some of the mechanisms of inter- action between a mammal’s different body systems (e.g., the exchange of oxygen and car- bon dioxide between the respiratory and circulatory systems)