PNB Study guides, Class notes & Summaries

PNB Hormones Pt 2 Exam 2024 5 things that can regulate hormone secretion -Answer-• change in plasma [ion] • change in plasma [organic nutrient] • neurotransmitter activation • circadian rhythms • other hormones when is PTH secreted and the effects -Answer-secreted in low blood calcium to raise the calcium effects of PTH -Answer-• reabsorption of calcium from kidneys • kidneys release calcitrol PTH causes reabsorption of calcium from the kidneys explain -Answer-reabsorb c...

PNB Lab 2 Exam Questions and Answers how is oxygen transported through the blood -Answer-via RBCs and hemoglobin - very small portion of O2 is actually dissolved in the blood (rest is carried) strucutre of RBC and what binds O2 -Answer-RBCs contain Hb heme is te portion of Hb that contains Fe and binds O2 how many oxygen molecules can one hemoglobin protein transport -Answer-4 Hb + 4O2 <--> Hb(O2)4 explain cooperative binding -Answer-binding of first O2 causes conformational change ...

PNB Unit 1: Blood Exam Questions and Answers 2024 What is blood classified as? -Answer-fluid connective tissue 3 overall parts of blood (composition) -Answer-plasma cells cell fragments (platelets) 2 physical properties of blood -Answer-mostly water (plasma) neutral pH (7.4) volume of blood in the body -Answer-4-6 Liters (70% body weight) volume of blood by gender -Answer-men have about 2 liters more blood than women 3 general functions of blood -Answer-transport regulation protectio...

PNB Unit 2: Heart (Gross Anatomy) Exam 2024 what is required for blood to be able to move through the tubes of the body? -Answer-a pressure gradient pressure creates ________ -Answer-flow substances always move from areas of ____ pressure to ____ pressure -Answer-high to low pressure areas what helps create pressure gradients? -Answer-pumps is the circulatory system an open or closed system? -Answer-closed is the relationship between pressure and volume direct or inverse? -Answer-inverse...

PNB Exam 4: ANS Questions and Answers 2024 what type of response is does the ANS elicit -Answer-involuntary what type of tissue does the ANS innervate -Answer-visceral non-skeletal muscle 4 target organs of the ANS -Answer-cardiac muscle: control heart rate smooth muscle: circulatory system adipocytes: fat glands: endocrine + exocrine are ANS neurons excitatory or inhibitory -Answer-both where are preganglionic cell bodies located -Answer-gray matter of CNS ventral horn phrase to desc...

PNB Unit 3: Heart (Molecular) Exam 2024 2 similarities between skeletal and cardiac muscle cells -Answer-striated sarcomeres - sliding filament model how are the fibers of cardiac myocytes organized in the heart -Answer-fibers are arranged to wrap around the chambers so when contract, they squeeze the chambers of the heart and reduce their volume to create the pumping 3 features unique to cardiac muscle compared to skeletal -Answer-bifurcations anastomoses intercalated disks bifurcation...

PNB lab 1 cell types and histology (and diseases) Exam 2024 Neutrophil -Answer-a granular leukocyte, named for the neutral stain of its granules, that fights infection by swallowing bacteria Lymphocyte -Answer- Monocyte -Answer- Eosinophil -Answer- Basophil -Answer- sickle cell -Answer- leukemia -Answer- infectious monon

PNB Lab 1 general Exam 2024 what are the formed elements in blood -Answer-RBCs, WBCs, and platelets 3 general functions of blood -Answer-transport defense maintain homeostasis purpose of a hematocrit test -Answer-measure % RBC in sample 3 layers seen once blood separates in centrifuge -Answer-hematocrit: RBCs buffy coat: WBCs and platelets plasma: water, proteins, nutrients why do men have greater hematocrit -Answer-more testosterone which stimulates EPO and erythropoiesis creating mor...

Vertebral artery - correct answer-Katy is experiencing visual disturbances due to reduced oxygen levels in her occipital lobe. Her physician believes they are most likely the result of a blood clot that is obstructing her: Accessory (Spinal Accessory) - correct answer-Which of the following cranial nerves is exclusively MOTOR? Pia mater - correct answer-While doing a tumor biopsy, a neurosurgeon's probe passes through the meningeal layer that contains CSF. The next structure to be encount...

Propagation of an action potential in a myelinated axon involves which of the following? All of the above The central nervous system includes the ______. All of the above The concentration of cation X(+) is 500mM inside the cell, and 100mM outside of the cell. Assuming that the membrane is permeable to X: The equilibrium potential for X would be negative The membrane is selectively permeable to all of the following EXCEPT: oxygen Activating a muscarinic receptor coupled to which G protein...