AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

AP Biology - Body Systems 1 Flashcards

Terms : Hide Images
6451773887First Line of DefenseNonspecific barrier to keep out pathogens ex: skin, stomach acid, mucous membrane, cilia0
6451773888Second Line of DefenseNonspecific defense and inflammatory response initiated by chemical signals to attack and isolate invading pathogens1
6451773889Inflammatory ResponseVasodilation, phagocytosis, and increase in body temperature2
6451773890Histamineschemical signals that trigger vasodilation, increasing blood supply to area3
6451773891PhagocytesWhite blood cells that engulf invading pathogens e.g., neutrophils, macrophages4
6451773892Chemokineschemical signals secreted by blood vessel cells that attract more white blood cells (phagocytes) to the area5
6451773893Specific immunityB and T cells; humoral and cell-mediated response6
6451773894Adaptive immunitySpecific immunity7
6451773895LymphocyteWhite blood cell8
6451773896B CellsHumoral response by producing antibodies; activated by T cells or free antigens9
6451773897T CellsCell-mediated response, stimulating by APCs10
6451773898Helper T CellSet off an alarm to the immune system that pathogens have broken through the body's line of defense; binds to class II MHC11
6451773899Cytotoxic T CellKills body cells that have been infected with pathogens; stimulated by antigens and helper T-cells12
6451773900MacrophagesAPC that engulfs large numbers of pathogens; presents antigen to activate T cells13
6451773901Interleukin 1Cytokine secreted by a macrophage after it engulfs and presents antigens on its surface; activates helper T cells14
6451773902Interleukin 2Cytokine that stimulates B cells to become active antibody-secreting plasma cells; released by helper T cell15
6451773903MHC Imolecules found on every body cell that presents antigen; signals cytotoxic T to destroy16
6451773904MHC IImolecules found on macrophages, B cells, and activated T cells; signal helper T cells17
6451773905Memory CellsResponsible for lifelong immunity by storing copy B and T cells to more quickly fight secondary infection18
6451773906AntibodyY-shaped protein with variable antigen bind region; slows pathogens to facilitate destruction19
6451773907AntigenIdentifying marker on the outside of a pathogen20
6451773908Passive ImmunityTemporary immunity where antibodies are transferred from another animal ex: mother transfers some of her antibodies to her nursing child21
6451773909HIVA retrovirus that attacks helper T cells22
6451773910Autoimmune diseaseA mistake in the immune system where the body does not properly distinguish self from nonself23
6451773911AllergyHypersensitive immune response to certain substances that causes that release of histamine24
6451773912oral cavitymade up of the mouth, pharynx and esophagus25
6451773913amylasedigests starch26
6451773914ascending colonfirst portion of colon from small intestine up to transfer colon27
6451773915lysozymeantibacterial enzyme28
6451773916boluschewed food with saliva29
64517739171common area for food and air30
6451773918epiglottisprevents food from entering the trachea31
6451773919upper esophagealsphincter that allows food through but not air; located directly below the epiglotis32
64517739201transports bolus from pharynx to stomach33
6451773921peristalsisinvoluntary muscular movement of food34
6451773922lower esophagealsphincter between esophagus and stomach; can also be called cardiac sphincter35
64517739231storage and mixing chamber36
6451773924hydrochloric acidactivates pesinogen to pepsin in the stomach for protein digestion37
6451773925pepsinenzyme that digests protein38
6451773926chymewhat the bolus turns into when in the stomach39
6451773927pyloricsphincter between stomach and duodenum40
64517739281made up of the dodenum, jejunum and ileum41
64517739291location of most digestion42
64517739301location of most absoption43
6451773931ileocealsphincter between the small intestine and the large intestine44
64517739321storage place for bile45
64517739331organ that produces bile46
64517739341produces 4 enzymes and bicarbonate used in digestion47
6451773935E colisynthesizes vitamin K48
6451773936involuntary analsphincter that produces the urge to defecate49
6451773937voluntary analsphincter that allows defecation50
6451773938mouthfirst site of digestion of carbohydrates and mechanical digestion51
6451773939pharynxalso refereed to as throat, space between mouth and epiglottis (shared respiratory and digestive area)52
6451773940Esophagusalso refereed to as gullet, tube from mouth to stomach; transports bolus from pharynx to stomach53
6451773941stomachlocation of majority of mechanical digestion of food and first location of protein breakdown54
6451773942small intestinelocation of majority food digestion; located after the stomach before the large intestine; divided into three parts, duodenum, jejunum, and ileum55
6451773943duodenumfirst portion of small intestine, where bile and pancreatic fluids enter the digestion system56
6451773944jejunumsecond portion of small intestine, B57
6451773945ileumthird portion of small inestine, C58
6451773946livermultiple functions but for digestion, it produces bile to emulsify fats in the small intestine and filters toxins from the hepatic vein from the stomach, small intestine and large intestine.59
6451773947gall bladderstores bile, located under liver on the bile duct from the liver to the duodenum60
6451773948pancreasreleases amylase (carbohydrate enzyme) and trypsin (protein enzyme) into the duodenum for digestion61
6451773949large intestineprimary purpose is water absorption; highest level of digestive absorption;. where chyme is converted to feces; also called the colon and divided into ascending colon, transverse colon, descending colon,sigmoid colon and rectum62
6451773950transverse colonsecond portion of colon going across from ascending to descending63
6451773951sigmoid colonlast portion of colon from descending to rectum64
6451773952rectumend of the colon from sigmoid colon to anal sphincters65
6451773953Nitrogenous wastesproducts containing nitrogen66
6451773954ammoniaWhen cells break down proteins, one of the byproducts is ammonia which is toxic to the body so organisms either convert it into uric acid or urea67
6451773955uric acidBirds and reptiles convert ammonia into uric acid68
6451773956ureaMost mammals convert ammonia into urea, excreted in urine.69
6451773957KidneyIn humans, the major organ that regulates excretion70
6451773958NephronsEach kidney is made up of a million tiny structures called neprons. Parts of the nephron: The Bowman's capsule, proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, the collecting duct71
6451773959Bowman's capsulePart of the renal cortex (outer most part of the nephron), blood enters the nephron through the Bowman's capsule72
6451773960Proximal convoluted tubulePart of the renal cortex (outer most part of the nephron), the filtrate from the bownmans capsule passes through the proximal convoluted tubule73
6451773961loop of Henlefrom the proximal convoluted tubule, the filtrate passes through the loop of henle74
6451773962distal convoluted tubulefrom the loop of henle, the filtrate passes through the distal convoluted tubule75
6451773963collecting ductFrom the distal convoluted tubule, the filtrate goes to the collecting duct, as it has traveled through the tube, it has been modified to form urine76
6451773964renal cortexThe outer section of the kidney. The portion of nephron present contains the Bowmans capsule and the proximal convoluted tubules77
6451773965renal medulllaThe inner section of the kidney. The portion of nephron present contains the loop of Henle and the distal convoluted tubules78
6451773966renal arteries (afferent)A blood vessel called the renal artery leads to the kidney and branches into arterioles, then tiny capillaries79
6451773967glomerulusA ball of capillaries that sits on the bowmans capsule80
6451773968urineFiltrate is modified as it goes through the nephron to form urine81
6451773969uretersConcentrated urine moves form the collecting ducts into the ureters82
6451773970bladderFrom the ureters, urine moves into the bladder83
6451773971urethraFrom the bladder, urine is released out of the urethra84
6451773972reabsoprtionSecond phase of how urine is made. As filtrate moves through the proximal convoluted tubule, some materials are reabsorbed by a network of peritubular capillaries. The material remaining in the tubule is urine. 1) Water is reabsorbed in the Loop of Henle 2) Proximal convoluted tube (glucose, vitamins, amino acids)85
6451773973secretionThird (and last) phase of how urine is made. As the filtrate moves through the convoluted tubules, some substances such as H+, potassium, and ammonium ions are secreted from the surrounding capillaries into the tubule. Distal convoluted tube (hormone regulation, sodium/potassium/hydrogen control)86
6451773974peritubular capillariesIn the reapsorption phase of making urine, small solutes such as water nutrients and salts leave the proximal convoluted tubules and are reabsorbed by the peritubular capillaries87
6451773975vasopressin (antidiuretic hormones)allows water to be reabsorbed from the collecting duct88
6451773976aldosteroneResponsible for regulating sodium reabsorption at the distal convoluted tubule89
6451773977skinan excretory organ that gets rid of excess water and salts from the body, primary function is to regulate body temperature. Has three layers: the epidermis, dermis, and subcutaneous tissue90
6451773978epidermisfirst layer of the skin91
6451773979dermissecond layer of the skin92
6451773980subcutaneous tissueThird layer of the skin93
6451773981stratum corneumThe epidermis is covered by a layer of dead cells called the stratum corneum94
6451773982Freshwater fish1) Urinates dilute urine 2) Never drinks water 3) Gills use ATP to pump solutes back into the body 4) It is hypertonic, but it lives in a hypotonic environment. It thus constantly removes excess water that is entering the body.95
6451773983Marine fish1) Constantly drink 2) Urine is concentrated 3) Gills use ATP to pump solutes out of the body 4) It is hypotonic, but it lives in a hypertonic environment. It thus tries to reduce water loss to the environment.96
6451773984Contractile VacouleUsed by freshwater single-celled organisms97
6451773985Describe Freshwater Flatworms (Protonephridia)1) Tubes with flame cels (cilia) 2) Cilia propels fluid through tubules 3) Cells lining tubules reabsorb salts 4) Dilute waste is excreted through nephridiopores98
6451773986Describe Metanephridia (Annelids)1) Nephrostome absorbs fluid from coelom 2) Fluid moves through a tubule 3) Collecting tubules reabsorbs beneficial solutes 4) Wastes -> Bladder -> Nephridiopore99
6451773987Functions of Kidneys1) Maintain proper volume of extracellular fluid (blood and interstitial fluid) 2) Maintain ionic balance in extracellular fluid 3) Maintain pH and osmotic concentration of the extracellular fluid 4) Excrete toxic metabolic by-products such as urea, ammonia, and uric acid100
6451773988FiltrationInvolves glomerulus (passive process)101
645177398911) Water is reabsorbed in the Loop of Henle 2) Proximal convoluted tube (glucose, vitamins, amino acids)102
64517739901Distal convoluted tube (hormone regulation, sodium/potassium/hydrogen control103
6451773991Diabetes InsipidusInability of kidney tubules to reabsorb water. The urine is very dilute and nearly colorless. Copious amounts of dilute urine104
6451773992Diabetes MellitusInsulin deficiency; sweet urine. Glucose cannot enter cells of the body and thus are excreted through urine.105
6451773993HepatitisJaundice. Damage to liver.106
6451773994GlomerulnephritisInflammation of the Glomerulus causes large solutes to get through. Can be caused by strep bacteria. Disease that allows large solutees (cells and proteins) into the urine.107
6451773995Hemolytic AnemiaHemoglobin is not reabsorbed so it stays in the urine. Urine may be a red-brown or smoky color. Hemoglobin in urine108
6451773996descending colonthird portion of colon from transverse to sigmoid colon109

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!