Depolarisation Study guides, Class notes & Summaries

HUBS 191 Progress Test 1 Questions and Answers Already Passed What makes up the axial skeleton? skull, vertebral column, rib cage What is recruitment? activating more motor units to make more force What are flat bones? Thin plates of compact bone - some cancellous What are flat bones used for? protection and muscle attachment What are irregular bones? Variable in shape size and function What is depolarisation? Membrane potential becomes less negative what causes depolarisat...

HUBS 191 Progress Test 1 Questions and Correct Answers.214 Questions and Answers. Complete Solution Updated 2024/2025. What makes up the axial skeleton? skull, vertebral column, rib cage What is recruitment? activating more motor units to make more force What are flat bones? Thin plates of compact bone - some cancellous What are flat bones used for? protection and muscle attachment What are irregular bones? Variable in shape size and function What is depolarisation? Membrane potent...

Edexcel A Level Biology Paper 3 Mark scheme June 2022: (9BI0) Paper 3: General and Practical Principles in Biology. A description including four of the following • {sodium / Na} channels open (1) • sodium ions flow into {axon / cell / neurone} (1) • this causes depolarisation (1) • {sodium / Na} channels close at {0.8ms / 30mV} (1) • {potassium / K} channels open at {0.8ms / 30mV} (1) (4) Question Number Answer Additional Guidance Mark 1(b) An answer that includes the followin...

ECG 2023 Exam Questions with Correct Answers What is sinus rhythm? - Answer-Normal heart rhythm, with the electrical activation beginning in the SA node Which part of the ECG corresponds to the contraction of the atria? - Answer-P wave Which part of the ECG corresponds to the depolarisation of the ventricles? - Answer-The QRS complex On the ECG what does the T wave correspond to? - Answer-Re-polarisation of the ventricles On an ECG what is a U wave? - Answer-An extra wave seen on...

HUBS1416 Practice Exam Questions and Answers Which of the following would be expected to inhibit the generation of an action potential? a) Inflammation of the myelin sheath b) Stimulating GABA receptors c) Blocking acetylcholine receptors d) Activating adrenalin receptors -Answer-b) Stimulating GABA receptors Which is true about neurons? a) At rest a neuron will have a negative membrane potential, due to it having more open K+ channels than Na+ channels b) Inhibitory neurons will relea...

Question number Answer Additional guidance Mark 1(a) An explanation that makes reference to two of the following: • to pump blood around blood vessels (1) • enabling mass transport (1) • therefore overcoming the limitations of diffusion (1) IGNORE to move blood IGNORE to move blood around the body ALLOW a description e.g. ‘needed to carry oxygen to where it is used’ e.g. ‘organism is too large for {substances/gases/glucose} to diffuse directly to organs’ / distance fo...

ECG 2023 Exam Questions with Correct Answers What is sinus rhythm? - Answer-Normal heart rhythm, with the electrical activation beginning in the SA node Which part of the ECG corresponds to the contraction of the atria? - Answer-P wave Which part of the ECG corresponds to the depolarisation of the ventricles? - Answer- The QRS complex On the ECG what does the T wave correspond to? - Answer-Re-polarisation of the ventricles On an ECG what is a U wave? - Answer-An extra wave seen on t...

HUBS 1406 Cardiovascular Practice Quiz with Complete Solutions HUBS 1406 Cardiovascular Practice Quiz with Complete Solutions HUBS 1406 Cardiovascular Practice Quiz with Complete Solutions The electrical activation (depolarisation) of the ventricles is represented on an electrocardiogram by the: - ANSWER-QRS complex The left atrioventricular valve is closed: - ANSWER-by the contraction of the left ventricle Which of the following is true about veins? - ANSWER-They are known as cap...

HUBS 191 Nervous System Latest Update 100% Solved Resting membrane potential -70mV Open Voltage gated ion channels are ? at -60mV Inactive Voltage gated ion channels are ? at+30mV Na+ Extracellular fluid as a high ? concentration and is therefore positive in comparison to the ICF K+ Intercellular fluid has a high ? concentration and is therefore slightly negative in comparison to the ECF Depolarisation The change from a negative resting potential to a positive action poten...

Resting membrane potential - ️️-70mV Open - ️️Voltage gated ion channels are ? at -60mV Inactive - ️️Voltage gated ion channels are ? at+30mV Na+ - ️️Extracellular fluid as a high ? concentration and is therefore positive in comparison to the ICF K+ - ️️Intercellular fluid has a high ? concentration and is therefore slightly negative in comparison to the ECF Depolarisation - ️️The change from a negative resting potential to a positive action potential (caus...