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BIO 220 Final Exam 3
Question | Answer |
---|---|
The amount of air breathed in or out during normal respiration | Tidal Volume |
The lung volume that represents the total volume of exchangeable air is the ____ | Vital Capacity |
Respiratory control centers are located in the ________ and _______ | Medulla and Pons |
The amount of air that can be inspired above the tidal volume | Inspiratory Reserve Volume |
Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by ________ | Diffusion |
How is the bulk of carbon dioxide carried in blood? | Bicarbonate ions in plasma |
Know the gross anatomy of both lungs | Right=3 lobes Left=2 lobes and cardiac notch |
Know role of the pleura | Reduces friction during breathing |
provide the greatest surface area for gas exchange | Alveoli |
The respiratory membrane is a combination of ________ | Alveolar wall+capillary wall=basement membrane |
Factors that promote oxygen binding to and dissociation from hemoglobin include | Pressure of O2 (PO2), temp, pH of blood, pressure of carbon dioxide (PCO2), concentraions of PBG |
The erythrocyte count increases after a while when an individual goes from a low to a high altitude because the ________ | Concentration of O2 and or total atmospheric pressure lower at higher altitudes |
Most inspired particles such as dust fail to reach the lungs because of the ______ | Ciliated mucous lining in the nose |
Components of Interstitial fluid | High: sodium, chloride, calcium and bicarbonate Low: Potassium, magnesium, phosphate, bicarbonate |
Components of Blood plasma | High: sodium, chloride, calcium and bicarbonate Low: Potassium, magnesium, phosphate, bicarbonate Less chloride |
Components of Intracellular fluid | High: potassium, magnesium, phosphate and sulfate Low: Sodium, chloride and bicarbonate |
The body’s water volume is closely tied to the level of _______ ions | Sodium |
The main physiological cause of Respiratory acidosis is ____________ | failure of ventilation |
Name the three chemical buffer systems | Bicarbonate, phosphate, plasma proteins |
Chlamydia trachmomatis bacteria, most common bacterial STI | Chlamydia |
human papillomavirus (HPV) 2nd most common STI | Genital warts |
Treponema pallidum | Syphilis |
human herpes virus type 2 – most difficult to control | Genital herpes |
Neisseria gonorrhoeae (“the clap”) | Gonorrhea |
Sperm enhanced and membrane of egg fragile | Capacitation |
Blastula fuses to uterine wall | Implantation |
Establishing 3 primary germ layers | Gastrulation |
Morula --> Blastocyst | Cleavage |
The embryonic stage lasts until the end of the ________week | Eighth |
The embryo is directly enclosed in and protected by the _________ | Amnion |
In fetal circulation, one way in which blood bypasses the lungs is by way of the __________ | Foramen ovale |
It is impossible for sperm to be functional (able to fertilize the egg) until they undergo _______ | Capacitation |
During the first trimester ________ produces Estrogen and Progesterone | Corpus luteum |
The two enzymes that act to break down the protective barriers around the egg, allowing the sperm to penetrate are ___________ and ________ | Protease, hyaloronidase |
Name the embryonic germ layers | Ectoderm, mesoderm, endoderm |
The hormone which maintains the viability of the corpus luteum is _______ | Human chorianic gonadotropin (HCG) |
The sheets of peritoneal membrane that hold the digestive tract in place are called ________ | Mesenteries |
The walls of every organ of the alimentary canal are made up of four basic layers. Arrange them in order from the lumen | Muscoa, submucosa, muscularis, serosa |
Name the factors that help create the stomach mucosal barrier | Thick bicarbonate coating, tight junctions and quick replacement of cells |
137. The capillaries that nourish the epithelium and absorb digested nutrients lie in the ________ | Lamina propria |
This hormone causes an increased output of enzyme-rich pancreatic juice and stimulates gallbladder contraction to release bile | Cholestokinin |
Hydrochloric acid is secreted by which of the secretory cells of the stomach? | Parietal cells |
Pepsinogen is secreted by the ________ | Chief cells |
Name the components of the renal corpuscle | Glomerulus – cluster of capillaries in nephron of kidney; makes filtrate and Bowman’s capsule – surrounds glomerulus |
The ____ artery lies on the boundary between the cortex and medulla of the kidney | Arcuate |
The juxtaglomerular apparatus is responsible for ________ | regulating rate of filtrate formation and controlling systemic BP |
The chief force pushing water and solutes out of the blood across the filtration membrane is ________ | Glomerular hydrostatic pressure (HPg) |
Name the components of The filtration membrane | endothelium, basement membrane, podocytes |
The macula densa cells respond to _______ | changes in the solute content of the filtrate |
The fluid in the Bowman's capsule is similar to plasma except that it does not contain a significant amount of ________ | plasma protein |
Why does Alcohol acts as a diuretic? | inhibits release of ADH |
Name The functions of angiotensin II | constrict artioles and increase BP |
A disease caused by inadequate secretion of antidiuretic hormone (ADH) is _____ | diabetes insipidus |
Place the following in correct sequence from the formation of a drop of urine to its elimination from the body | nephron->collecting duct->minor calyx->major calyx->ureter->urethra |
The factor favoring filtrate formation at the glomerulus is the _______ | glomerular hydrostatic pressure (HPg) |
If one says that the clearance value of glucose is zero, what does this mean? | normally all glucose if reabsorbed |
increased levels of potassium | Hyperkalemia |
increased levels of magnesium | Hypermagnesemia |
Increased levels of sodium | Hypernatremia |
Decreased levels of calcium | Hypocalcemia |
Decreased levels of sodium | Hyponatremia |
Aldosterone regulated ______ and ______ in an antagonistic fashion | Sodium and potassium |
The two organs that function as the most important physiological buffer systems are _____, _____ | Kidneys and lungs |
The three methods for regulating the hydrogen ion concentration in blood are | chemical buffer systems, repsiratory changes and renal mechanism (urinary mechanism) |