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

BIO Ch. 44 Osmoregulation Flashcards

Terms : Hide Images
3865288376what does osmoregulation do?controls solute concentrations and balances water gain and loss0
3865290982what is the driving force for movement of solutes and water?a concentration gradient of one or more solutes across the plasma membrane1
3865292804Osmolaritythe solute concentration of a solution2
3865295167what determines the movement of water across a selectively permeable membrane?osmolarity3
3880956018Osmoconformersisoosmotic with their surroundings and do not regulate their osmolarity4
3880958629Osmoregulatorsexpend energy to control water uptake and loss in a hyperosmotic or hypoosmotic environment5
3880965868Most marine invertebrates areOsmoconformers6
3880970777Marine bony fishes arehypoosmotic to seawater7
3880973592how do bony fishes, such as cod, balance being hypoosmotic with water loss?drinking large amounts of seawater and eliminating ingested salts through their gills and kidneys by specialized chloride cells8
3880984199most animals areOsmoregulators9
3880992159how do freshwater animals maintain water balance?drinking almost no water and excreting large amounts of dilute urine10
3881036973how do terrestrial animals help prevent dehydration?Body coverings11
3881036974how do land animals maintain water balance?eating moist food and producing water metabolically through cellular respiration12
3881036975desert animal adaptations for saving watersimple anatomical features and behaviors such as a nocturnal lifestyle13
3881040728is osmoregulation active or passive?active --> requires energy to maintain osmotic gradients14
3881047606what do excretory systems do?regulate solute concentration between internal fluids and the external environment15
3881056420urine is produced by...?refining a filtrate derived from body fluids16
3881056421FiltrationFiltering of body fluids17
3881062144secretionAdding nonessential solutes and wastes to the filtrate18
3881062145excretionProcessed filtrate containing nitrogenous wastes is released from the body19
3881063908selective reabsorptionexcretory system choosing what materials to keep and what to excrete; keep valuable solutes20
3881065894urine fluid starts as...?blood21
3881084030excretory organs of vertebrateskidneys22
3881088948type of pressure involved with osmoregulation and excretionhydrostatic pressure23
3881097391Kidney supplied with blood by ...?renal artery24
38811001592 regions of the mammal kidneyrenal cortex and renal medulla25
3881102400nephronfunctional unit of the kidney26
3881105124Each nephron made up ofa long tubule and ball of capillaries called the glomerulus27
3881108429Bowman's capsulecup-shaped swelling called at the end of the kidney tubule28
3881114963what forces filtration?blood pressure29
3881119004filtration starts asfluid from the blood in the glomerulus goes into the lumen of Bowman's capsule30
3881121969collecting ducts in the nephron empty accumulated filtrate (waste) intothe renal pelvis, which is drained by the ureter31
3881125251Urine exits each kidney throughthe ureter32
3881128981ureters drain intothe urinary bladder33
3881182169what manages the osmoregulatory functions of the mammalian kidney?nervous and hormonal controls34
3881188606osmoregulatory function of the kidney contribute to...?blood pressure and blood volume35
3881193179ADHAntidiuretic hormone36
3881198575what monitors blood osmolarity and regulates release of ADH?Osmoreceptor cells in the hypothalamus37
3881203818ADH is released from...?the posterior pituitary gland38
3881209945what does ADH released into the blood stream increase?When osmolarity rises above its set point39
3881214851effect of increased ADH in blood streamreduces urine volume and lowers blood osmolarity40
3881218264what does a diuretic do?inhibits the release of ADH (resulting in increased urination)41
3881223074example of a diuretic?alcohol42
3881224926Mutation in ADH production causessevere dehydration and diabetes insipidus43
3881259877normal osmolarity of humans30044

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!