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DAT Biology III Flashcards

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560810395Ectothermsobtain heat from environment
560810396Endothermsgenerate own heat
560810397What do chemorepectors monitor in Human respirationlevel of [H+] in the carotid arteries
560810398What is the air passages?Nose, pharynx (throat), larynx (voice box), trachea, bronchi, bronchoiles, Alevoli
560810399Another name for the pharynxthroat
560810400Another name for the larynxvoice box
560810401order these, larynx, pharynx, trachea1. Pharynx 2. Larynx 3. Trachea (PLT similar to BLT)
560810402Negative pressure breathingInhalation
560810403diaphragm contracts/flattensinhalation
560810404external intercostal muscles contractinhalation
560810405rib cage and chest up and outinhalation
560810406thoracic cavity increase in volumeinhalation
560810407passive breathing processexhalation
560810408diaphragm relaxexhalation
560810409external intercostal muscles relaxexhalation
560810410chest wall pushes inwardexhalation
560810411thoracic cavity volume decreaseexhalation
560810412reduce pressure in thoracic cavityinhalation
560810413constantly drink/rarely urinate/excrete salts through gillsmarine fish
560810414rarely drink/urinate constantly/absorb salts through gillsfresh water fish
560810415Flame cells (protonephridia) are in what type of animal use in the excretory system?platyhelminthes
560810416what uses nephridia for excretory system?annelids
560810417malpighian tubles for excretory system?arthropods (produce nitric acid, solid waste)
560810418What produces urea and where?Amino acid and in the liver, fuses with blood then goes to kidney
560810419Which part is more concentrated? medulla or cortexmedulla has more concentrated urine because of the collecting duct
560810420filtration through glomerulus. The filtrate is hypertonic/isotonic/hypotonic to the blood plasma?istonic to blood plasma
560810421Filtration is a passive or active process and via what?passive via hydrostatic pressure forces 20% into glomerulus
560810422secretion is passive or active?passive and active
560810423where does reabsorption mostly occur? and is it passive or active?-most in proximal convoluted tubule. -active process when reabsorbing amino acids/vitamins and . but reabsorption/sodium -passive with water
560810424The descending loop of henle only reabsorbs what?water (descending is the loop on he left)
560810425Ascending loop of henle only reabsorbs what?Na and Cl
560810426what is the point of mucus in stomach?protects stomach lining from acidic juice such as HCl and pepsinogen
560810427What is the physical and chemical breakdown of food in the stomach?physical breakdown = food size gets smaller chemical = food mixes with gastic juice produce by the glands in stomach. (pepsinogen become pepsin)(chyme in stomach release gastrin which release HCl)
560810428enzyme pepsinProduce in chief cells and stomach pepsinogen --> pepsin acidic and breaks down protein
560810429HClProduce by gastrin in stomach kills bacteria and dissolves glue that is holding food together
560810430what causes stomach ulcers?pepsin may cause stomach ulcers if mucus breaks down in stomach
560810431pyloric sphincterchyme passes from stomach to duodenum (beginning of small intestine)
560810432Where does most of the digestion occur?in the duodenum of the small intestine (this is where the the intestinal glands, pancreas, liver, and gall bladder mix with chyme) duodenum, ilium, jijunum
560810433the ilium and jijunum absorbs digested food through villi, what are the two ways the digested food can travel? and what passes through each? where does it eventually go?1. capillaries = amino acid and monosaccharides passes and goes into blood capillaries 2. lacteals = large fatty acids and glycerol passes and goes into lymph system
560810434What 3 enzymes does the pancreas produce and what does each do?1. Trypsin (proteases) and also converts chymotrypsinogen to chymotrypsin 2. chymotrypsin (proteases) 3. amylase (starch digestion)
560810435What does bile do? Passage of BileFunction = emulsify fat and neutralize pH becase bile is alkaline 1. liver makes bile 2. bile store in gall bladder 3. bile pass bile duct 4. bile pass pancreatic duct 5. bile goes into small intestine where fats are digested(emulsify)
560810436Main function of large intestine?reabsorb water and salt to form solid waste and stored int he rectum
560810437Where and why is Gastrin secreted and what does it secrete?-Gastrin is produced by cells of the stomach lining when food enters the stomach or it can produce upon smell of food -it secretes HCl (gastric juice)
560810438Where is secretin produce and why? and what does it stimulate?- produce in small intestine - produce by cell lining of duodenum when food enters -stimualte bicarbonate production to neutralize acidity of chyme
560810439Where is choecystokinin produce and why? and what does it stimulate?- produce by small intestine in response to fats - it stimulates bile release from the gall bladder and the release of panreatic enzyme into small intestine
561095444Resting Potential at __. How many of what pumps in and out?-70 mV pumps 2K+ in and 3Na+ out (active) making inside negative Neuron permeable to K+ going back out but not Na+ coming back so stays negative
561095445Action Potential at __. What happens?-50 mV Threshold/All or nothing response - Na channels open to allow Na to come in and depolarize (making inside less negative from -70 to -50)
561095446Repolarization- Na channels close - K channels open in response to depolarization, K floods out, repolarizing the cell back to resting potential.
561095447Hyperpolarizationmore neg inside than resting potential because K channels open for too long
561095448Myelin in PNS is called?Schwann cells
561095449Myelin in CNS is called?oligodendrocytes
561095450Cell bodies clustered together is called what in the PNS? CNS?PNS = ganglia CNS = nuceli
561095451plexusnetwork of nerves
561095452Which muscle is mutlinucetated?skeletal always and cardiac sometimes, smooth is mononuceleated
561095453myogeniccapable of contracting without stimulation from nerve cells (smooth and cardiac)
561095454highly branched and connected by gap junctions (smooth, cardiac , or skeletal)cardiac
561432921Increase plasma osomolarity produce?ADH secretes when you have an increase plasma osomolarity means less water and more salts in plasma and you want to secrete ADH to make the collecting duct permeable to water and promote water reabsorption.
561432922decrease blood volume, you want to produce more?ADH or Aldoesertone
561432923Where is glycogen stored?muscles and liver
561432924What is acromegaly and what hormone causes it?cause by over production of Growth hormone in adults, disapportionate overgrowth of bone
561432925What are direct hormones?PEG - prolactin , endorphins, growth hormones
561432926What are tropic hormones?FLAT
561432927What 3 hormones belong to adrenal cortex?1. mineral = aldolesterone 2. glucocorticoids = increase glucose in blood via gluconeogenesis, decrease protein production 3.sex hormones = androgens
561432928if the blood volume in the kidneys fall, what does it produce? and what does the thing it produce affect?1. release renin 2. renin converts angiotensinogen to angiotensin I to angiotensin II release Aldoesterone 3. Aldoesterone increase Na reabosption, water fallows Na
561432929what does the pineal gland secretes?1. melatonin = regulates circadian rhythms
561432930GnRH regulates?LH and FSH
561432931estrogen and progesterone regulates ?GnRH
561432932LH and FSH regulates ?estrogen and progesterone
561432933What are the four stages of menstrual cycle?1. Follicular stage 2. ovulation 3. Luteal stage 4. menstruation
561432934what happens in the follicular stage?-FSH stimulates development of follicle -follicle secrete estrogen peak -estrogen stimuates spike LH
561432935Ovulation stagebecause of LH spike follicle burst and release ovum
561432936Luteal Stageburst ovum becomes corpus luteum Endometrium thickens due to estrogen and progesterone to prepare for implantation
561432937Menstruationnegative feedback Corpus luteum disintegrates due to low FSH and LH Endometrium disintegrates in absence of estrogen and progesterone
561432938Deuterostomesradial cleavages, usually indeterminate cleavages, anus forms first
561432939Protostomesspiral cleaves, usually determinate cleavages, mouth forms first
561432940Notochord derived from the?mesoderm
564734076What supports the cytoskeletal structure?microfilaments and intermediate filatments
564734077what are microfibrils?building blocks of the cellulose
564734078Endergoniccompound synthesis from smaller chemical to bigger chemical are enderognic (anabolic)
564734079Animals cells become lysed while plants cells?become turgid
564734080Helper T cells are activated by?antigens presented by macrophages
564734081Cytotoxic T cells activated by?antigens presented by infected cells
564734082Double fertilization within the ovule of an angiospermone time mitosis to produce 2 sperm cells that separately fertilize a egg cell and 2 polar nuclei through the aids of a pollen tube.
564734083Total number of ATP required for the synthesis of one glucose molecule via Calvin Cycle18
564734084The male sex hormones are produced by?interstitial cells
564734085Prostate glandfacilitates ejaculation of sperms by prematurely secreting a thin, milky fluid
564734086Synapsissynapsis of homologous chromosomes is the making of tetrad in prophase I or Meiosis I.
564734087Rate constant equation for half lifek=0.693/time of half-life
564734088Combustion produces what and uses what in excess amount?Produce CO2 and H20 and requires O2 in excess
564734089Formation of acetals from aldehydes and alcohols is carried out via...nucelophic additions
566028112what are the 3 nonspecific leukocytes?nutrophiles, macrophages, natural killer (NMN)
566028117what are interferons and what does it do?helps neighbors produce anti-viral proteins to prevent spread of virus
566028119what manufactures antibodies and what does it do?plasma cells makes antibodies inactivate antigens by binding to them followed by phagocytosis
566028122Once B cells encounters an antigen, it proliferates into two cells, what are they and with the help out what?proliferate into Plasma cells and Memory cells with the help of T helper cells
566028124When activated, what are the two types of T cells?1. cytotoxic T cells (aka killer T cells) - lyse non-self cells 2. helper T cells - stimulate proliferation of B cells and cytotoxic T cells
566028125What happens during cell-mediated response?T cells responds to non-self cells (antigen) and produce cytotoxic T cells t destroy non-self cells OR T cells produce helper T cells that bind to macrophages that engulf non-self cells
566028127during fertilization, sperm recognize what to ensure proper reproduction?zona pellucida
566028128In humans, penetration triggers what?meiosis II
566028130What is the blastocoel and what stage is it in?fuild filled cavity in bastula
566028132what is the blastopore and what stage is it in?in gastrula, becomes the anus or mouth first
566119842The neural tube forms?Central Nervous System
566119843What is the gray crescent in frog?cytoplasm where sperm penetrates egg
566119844blastodiscblastulation in birds
566119845Primitive streakwhere gastrulation occurs in birds, not blastopore
566119846blastocystim humans where gastrulation occurs. consist of trophoblast (outter ring of cells, forms the chorion) and embryoblast (where gastrulation ocurs)
566119847simple reflexafferent to efferent via spinal cord
566119848complex reflexreticular activitating sys. "startle response"
566119849instinct behaviormammals take care of offspring
566119850fixed action patterninnate behavior that once trigger, goes to completion.
566119851imprintinginnate programming of behavior if stimulus experience during early life
566119852Operant conditioningreinforcement method
566119853spatial learningreturn to important location Ex. birds to their nest
566119854habituationrepeat stimulation decrease response (scarying someone, if you stay in the same location and scare repeatly they will eventually not yell)
566119855observational learninganimal copy behavior of another
566119856insightanimal exposed to new behvior uses prior experience to gain desirable outcome
566119857agonistic behaviorThis often ritualized contest that determines which competitor gains access to a resource
566119858Altrusitic behaviorrisk of self to help another
566119859Environmental Rhythmsmaintained by environmental stimuli (ex. traffic light signals)
566119860biotic potentialmax growth rate of population under ideal condition
566119861carrying capacitymax number of individuals in population that can be sustained by habitat
566119862density-dependent factorsdensity dependent on predation, resouce, etc K selected better due to competition
566119863density-independent factorsoccur independently of the density of population ex. flood, extreme climate R selected do better due to quick reproduction
566119864what has an exponential growth?when birth rate exceed mortality rates

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