Hphy Study guides, Class notes & Summaries

hphy 325 lab 2b structures

Work - product of force and the distance through which the force acts W=Force x Distance Measured in Neutonmeters or Joules Power - how much work is accomplished per unit of time P= W/T Measured in Watts Ergometry - Measurement of the work output Example: Bench step in which the participant steps up and down on a bench at a specified rate -Erogemter, treadmill, cycler Calorie - amount of heat required to raise the temperature of one gram of water by one degree Celcius Direct ca...

RER vs RQ and 1 - RER can be greater than 1 RQ cannot be greater than 1 Factors concering maximal Oxygen Uptake VO2 max - Central factors: oxygen delivery -pulmonary diffusion, blood volume, cardiac output Peripheral factors (oxygen uptake/use) -capillary density, mitochondrial mass VO2 max criteria: plateau, RER >1.1, [lactate] > 8 mmol/L, HR 220-age, RPE>15 RER >1 - RER= CO2/O2 greater than 1 = CO2 from other sources other than mitochondrial metabolism -Bicarbonate ...

Muscles that attach to the hip bone - Pectineus, psoas, minor, iliacus, tensor fascia lata, sartorius, rectus femors, adductor longus/brevis, adductor magnus, gracilis, obturator externus, internus, glueteus maximus/minimus, gemelli superior/inferior, quadratus femors, semitendinosus, semimembranosus, & bicep femoris muscles that don't attach to the hip bone - psoas major, vastus lateralis, vastus medialis, and intermedius, and piriformis Muscles that attach to the greater trochanter of t...

HPHY 325 Lab 1 Questions And Answers

Direct calorimetry - process of measuring a person's metabolic rate via the measurement of heat production -direct measurement of metabolic rate Indirect calorimetry - direct relationship between O2 consumed and amount of heat produced -O2 consumption, CO2 production, N2 balance Oxygen deficit - -a lag due to slower activation of oxidative pathways -difference between oxygen uptake in the first few min of exercise and after an equal time period of steady state What is the steady s...

Define Homeostasis and explain its significance - correct answer stable internal enviornmant also known as the goldilocks state -dynamic equilibrium -important because without homeostatic balances, diseases will develop What can happen if there is homeostatic imbalance - correct answer can cause further diseases to occur Examples of homeostatic imbalance - correct answer too much glucose in the blood: diabetes persistent high blood pressure: Chronic heart disease, heart attacks

The anterior pituitary typically is because it secretes tropic hormones - correct answer Which endocrine gland is considered the master gland? Thyroid Stimulating Hormone (TSH), Adrenocorticotropic Hormone (ATCH), Follicule Stimulating Hormone (FSH), Lutenizing Hormone - correct answer What are the four tropic hormones secreted by the anterior pituitary gland? Stimulated by: Thyrotropin Releasing Hormone (TRH) Inhibition: High levels of Thyroid hormone (negative feed back) Monitored b...

What vessel does the Great cardiac vein travel with - anterior interventricular coronary artery Where does the great coronary vein empty into - coronary sinus Where does the coronary sinus empty into - pulmonary artery With which artery does the right coronary artery join with at the back of the heart - Posterior interventricular artery What does the left coronary artery branch into - anterior descending coronary artery and left circumflex artery

T/F: Nephrons can regenerate. - correct answer false functional unit - correct answer smallest unit in an organ that can perform the function of the entire organ (nephron) parietal layer of the renal corpuscle is made up of what cell type? - correct answer simple squamous visceral layer of the renal corpuscle is made up of what cell type? - correct answer podocytes function of podocytes in the renal corpuscle - correct answer help filter out larger molecules via filtration ...