Atpase pump - Study guides, Class notes & Summaries

Why is it so important to keep Ca2+ levels low inside the cell, and how is this accomplished? Ca+ is the most commonly used 2nd messenger. The intracellular conc. Is very low and the extracellular conc. Is several times larger. A rise in Ca leads to receptor activation -> kinases -> and the phos. Of targets. How are levels of Ca2+ increased inside cells? 1. Voltage gated Ca channels on pm. 2. Ligand gated channels like NMDA Rs, on pm. 3. IP3 & RYR receptors on ER, Ca release from ...

Pathophysiology Final Exam Review - Multiple Choice Questions and Answers(graded A) A 25 year old female with type 1 diabetes mellitus presents to an outpatient medical clinic complaining of thirst, frequent urination, and weakness. She feels "lightheaded" when she stands. Because of nausea and vomiting after a meal in a restauraunt the previous day, she stopped eating and taking her insulin. On examination, she is dehydrated and hypotensive. Her breathing is rapid and deep. Considering thi...

NURS 8022 Exam 1 Questions With Correct Answers 100% Negative Feedback - ANSWER Promotes stability; cancels out the original response. Ex: High FSBS, increased insulin by the pancreas Positive Feedback - ANSWER Promotes a change in one direction; instability, DISEASE. Ex: Blood clotting, platelet cascade Proteins - ANSWER Provide selectivity to a membrane Integral proteins - ANSWER channels, pores, carriers, enzymes, receptors, second messengers Peripheral proteins - ANSWER Enzy...

AP Biology Questions and Answers (Graded A) Resting membrane potential depends on which of the following(s)? I. Active transport II. Selective permeability III. Differential distribution of ions across the anxonal membrane All three. The resting potential depends on active transport (the Na+K+ATPase pump) and the selective permeability of the axon membrane to K+ than to Na+, which leads to a differential distribution of ions across the axonal membrane Mitosis The division of the moth...

NURS 8022 Exam 1 Questions With Correct Answers 100% Negative Feedback - ANSWER Promotes stability; cancels out the original response. Ex: High FSBS, increased insulin by the pancreas Positive Feedback - ANSWER Promotes a change in one direction; instability, DISEASE. Ex: Blood clotting, platelet cascade Proteins - ANSWER Provide selectivity to a membrane Integral proteins - ANSWER channels, pores, carriers, enzymes, receptors, second messengers Peripheral proteins - ANSWER Enzy...

EEOB Exam 4 Questions with 100% Correct Answers | Latest Version 2024 | Verified What does the protein act like in carrier mediated transport? What type of protein is used? - a shuttle (integral transmembrane protein) What regulates carrier mediated transport? Why? - binding regulates transport because the solute must interact with the protein, changes the protein's shape What are the two types of carrier mediated transport? - facilitated diffusion and active transport Which type o...

AP Biology Questions and Answers (Graded A) The resting membrane potential depends on which of the following? I. Active transport II. Selective permeability III. Differential distribution of ions across the axonal membrane A. III only B. I and II only C. II and III only D. I, II, and III D The resting potential depends on active transport (the Na+K+-ATPase pump) and the selective permeability of the axon membrane to K+ than to Na+, which leads to a differential distribution of ...

Endocrine Anatomy and Physiology Analyze the anatomy and physiology of the endocrine system: 1. Examine the production and action of hormones produced by the thyroid, pancreas, and adrenal glands. • Thyroid: ▪ T4 (90%): 1. Released by thyroid gland  converted to T3 inside of cell prior to entering nucleus ▪ T3 (10%): 1. more potent, actions are short-lived, present in blood in much smaller amounts than T4 2. stimulates production of the contractile protein a-myosin heavy chain i...

DIABETES EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH EXPLANATIONS 2024/2025 UPDATE (ALREADY GRADED A+) A nurse reviews the laboratory results of a client who is receiving intravenous insulin. Which should alert the nurse to intervene immediately? a. Serum chloride level of 98 mmol/L b. Serum calcium level of 8.8 mg/dL c. Serum sodium level of 132 mmol/L d. Serum potassium level of 2.5 mmol/L - ANS: D Insulin activates the sodium-potassium ATPase pump, increasing the movement of potass...

Which electrolyte is the most important determinant of intracellular osmotic pressure? Answer> potassium Which electrolyte is the most important determinant of extracellular osmotic pressure? Answer> sodium The cell membrane regulates volume and composition via a ____ pump, which exchanges ____ for ____ in a ___ ratio Answer> Na-K ATPase, Na+, K+, 3:2 the extracellular fluid is broken down into ____ and ____ fluids Answer> intravascular, interstitial _____ is the major ...