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human biology

QuestionAnswer
digestive system- GI tube mouth, esophagus, stomach, small intestine, large intestine,rectum, anus.
digestive system- accessory organs teeth, mandible, salivary glands, liver, gall bladder, pancreas.
the mouth Teeth chew food; tongue tastes and pushes food for chewing and swallowing
Pharynx passageway where food is swallowed
the stomach secrets acid and digestive enzynes for protein; churns, mixing food with secretions and sends chyme to small intestine
large intestine absorbs water and salt to form feces
rectum stores and regulates elimination of feces
salivary glands secrete saliva: contains digestive enzymes for carbohydrates
liver major metabolic organ: processes and stores nutrients `
pancreas procures pancreatic juice:contains digestive enzymes, and sends it to the small intestine produces insulin and secrets into the blood after eating.
osmolality the total solute concentration in a given solution. isosmotic, hyposmotic, hyperosmotic.
hypertonic a solution with a high osmotic pressure
hypotonic a solution with low osmotic pressure
isotonic equal osmotic pressure- no net water movement will occur if a cell is placed in this solution.
nephrons makes urine by filtering the blood of its small molecules and ions, reclaims useful materials and releases surplus or waste out as urine.
collecting tubule it leads to the pelvis of the kidney form where the urine flows to the bladder and, periodically, on to the outside world
how do the kidneys maintain homeostais excrete wastes, regulates blood volume and pressure, regulates pH, assistance to other system.
osmosis Osmosisīƒ diffusion of water across a membrane from a more dilute solution (low solute concentration) to a less dilute solution (high solute concentration)
glomerulus blood enters under pressure
after Blood enters the glomerulus under pressur, small molecules and ions to filter through the capillary walls into Bowman's capsule.
ADH- anthidiuertic hormone Causes wall of collecting ducts to be more permeable to water so more water is reabsorbed.
Atrial natriuretic hormone secreted by right atrium of heart in response to increased blood volume promotes excretion of salt and water into the urine
Function of the lungs is gas exchange with the blood.
breathing moving air in/out of lungs
External respiration: in the lungs exchange of gas into the blood
internal respiration exchange of O2 BETWEEN BLOOD AND CELLS
the respiratory system mouth/nose, pharynx, larynx, trachea,bronchus, brachioles, aveoli
mouth/nose how air enters and leaves your system
pharynx connects nose to the larynx
larynx your voice box, it connects your pharynx to your trachea
trachea your windpipe, it connects your larynx to your bronchus
bronchua the main tubes that runs from the trachea the brochioles. the two tubes that divide to your left and right lung
brochioles smaller tubes made of smooth muscles that divide into many tubes
aveoli where gas exchange takes place. air sacs in the lungs covered in blood vessels
inhaling is active and need muscular contractions. rib cage rises, diaphragm goes down.
exhaling is passive and happens when muscles relax., rib cage descends, diaphragm goes up.
Larynx--> mouth, throat (pharynx), trachea
Lungs--> bronchi, bronchioles, alveoli
Epiglottis acts like a door- sits on top of the voice box. Opens up when eatin putting pressure on the breathing .
gametes sex cells
fertilization the combination of a female and male gametes
zygote a fertilized egg
embryology the study of developing embryos
development a series of events that give rise to full grown organism
embryo a multicellular organism in the early stage of development
differentiation a series of changes that transfer unspecialized embryonic cells into specialized tissues, and organs.
cleavage series of cell division by the zygote
morula first stage of development. solid balls of cells undergoing cleavage
blastula second stage of development
gastrula the third stage of development. In this stage, cells on one side of the blastula move inward and form a multi-layered embryo with three germ layers.
germ layers Three distinct tissue layers that form during gastrulation. The three major germ layers are the endoderm, mesoderm and exoderm.
aorta the main artery in the body, caries blood form the left ventricle to the systematic circulation
artery a blood vessel that carries blood away from the heart to the rest of the body
atria a chamber that receives blood that is returning within the lungs
bronchiole a small air passage that branches form the bronchi within the lungs
capillary a tiny blood vessel that allows an exchanged between blood and cells in tissues
pulmonary circulation in animals, respiration through the lungs
systemic circulation the movement of blood from the heart to the heart
vein in animals, a vessel that carries blood to the heart
ventricles one of the two large muscular chambers that pump blood out of the hear
Created by: stetrelles304
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