Depolarisation Study guides, Class notes & Summaries

BHCS1002 2018/2019 Exam Questions with Complete Solutions what does the PR segment represent on the ECG? - ANSWER ventricular systole The membrane potential of any living cell is partially the result of: a) a transient increase in the membrane to sodium conductance b) a membrane that is leaky to sodium conductance c) a transient increase in the membrane to potassium conductance d) a membrane that is leaky to potassium conductance e) a membrane that is leaky to chloride conducta...

LTP induction Exam Questions with Correct Answers What is LTP? - Answer-Long term potentiation (LTP) is a key form of synaptic plasticity that involves a sustained increase in the strength of synapses and is thought to play a fundamental role in the way we learn and store memories What are the key properties of LTP? - Answer-1. Input specificity 2. Co-operativity 3. Associativity What is input specificity? - Answer-Once induced, LTP at one synapse does not spread to other synapses; r...

What are myofibrils? - Answer They are cylindrical organelles that run along the length of muscle fibres, they are the site of muscle contraction How are myosin and actin filaments arranged? - Answer In an alternating pattern in sarcomeres, thick myosin filaments overlap with the thin actin filaments at each end What is a pair of muscles called? - Answer An antagonistic pair What is the sarcolemma? - Answer The membrane of muscle fibres what is the mitochandria? - Answer ...

NUR 231 EXAM QUESTIONS WITH VERIFIED ANSWERS Which factors psychological factors may increase a person's tolerance to pain - answerAnxiety A pain caused by a compressed nerve may be described as - answerBurning, shooting and tingling Which route of administration is best for patients with chronic stable pain? - answerOrally sustained released Which drug is considered to be a weak opiod used in moderate pain? - answerCodeine What is not considered to be a mechanism of action of opioid a...

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...

AQA A Level Biology : Year 2- Nervous Coordination Graded A What is the value of the resting potential of a neurone? Why is the resting potential of a neurone negative? -70mV There are more positive ions outside the cell than inside How is the resting potential maintained? actively transports 3 Na+ out for ever 2 K+ into the neurone (ATP Hydrolysed) Sodium-potassium pump Membrane more permeable to K+ and less permeable to Na+ What happens if the sodium ion channels rema...

BTEC Applied Science Unit 9B: Homeostatic control of body systems. Homeostasis- The constant maintenance of a constant internal environment within an organism. One’s body needs to sustain its internal condition at certain levels to function. Homeostasis is called the preservation of internal conditions such as pH, temperature, and salt concentration in a stable equilibrium. Homeostasis is also known as a process of self-regulation by which an organism seeks to preserve equilibrium when ada...

NUR 231 EXAM QUESTIONS WITH VERIFIED ANSWERS Which factors psychological factors may increase a person's tolerance to pain - answerAnxiety A pain caused by a compressed nerve may be described as - answerBurning, shooting and tingling Which route of administration is best for patients with chronic stable pain? - answerOrally sustained released Which drug is considered to be a weak opiod used in moderate pain? - answerCodeine What is not considered to be a mechanism of action of opioid a...

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...

BTEC Applied Science Unit 5 Exam 105 Questions with Answers Function of the Right Pulmonary Artery - CORRECT ANSWER Carried deoxygenated blood to the right lung Function of the Aorta - CORRECT ANSWER Carries oxygenated blood from the left ventricle to the rest of the body Function of the Left Pulmonary Artery - CORRECT ANSWER Carries deoxygenated blood to the left lung Function of the Left Pulmonary Vein - CORRECT ANSWER Carries oxygenated blood to heart from left lung Function ...