1 BIOC33/CC4 Cardiovascular System (Lectures 1-4) Study Guide (2015) Lecture 1: Electrical Conduction within the Heart Topics The Conduction System of the Heart Pacemaker Potential Sample Questions 1. What is the pathway of electrical conduction in the heart? 2. Which changes in ionic conductance (permeability) accompany the various phases of the pacemaker potential? 3. 1. 2. 4. a) In zone 1‚ a decrease in PK and an increase in PNa: In zone 2‚ an increase in PCa b) In zone 1‚ a decrease in PK
Premium Heart Cardiology Blood
in industry and environment. Heat transfer is central to the performance of propulsion systems‚ design of conventional space and water heating systems‚ cooling of electronic equipment‚ and many manufacturing processes (Campos 3). Unsteady state conduction is the class of heat transfer in which the temperature of the conducting medium varies with time and position. This occurs frequently in industrial processes‚ especially food preservation and sterilization‚ where the temperature of the food or of
Premium Heat transfer
typically conducts electrical impulses away from the neuron’s cell body transmiting neuroal signals. The axon is the tail-like part of the neuron where sinformation exits the cell. It helps in the transmit information. The function of the axon is to transmit information to different neurons‚ muscles and glands. Myelin sheath Myelin sheath is an insulating envelope of myelin that surrounds the core of a nerve fiber or axon and that facilitates the transmission of nerve impulses‚ formed from the cell
Premium Neuron Action potential Nervous system
promotes an efflux of fluids. Sustaining this type of osmotic gradient is essential for nerve and muscle function‚ hydration‚ and maintaining blood pH levels. Additionally‚ electrolytes carry electrical impulses across the cell and to neighbouring cells in order to promote muscle contractions and nerve impulses. 1. The pH of the tissues and the entire body fluids affects the condition of your health. The closer the pH is always to 7.35 - 7.45‚ the more likely you are to stay healthy and be able to fight
Premium Blood Potassium Cell membrane
assigned the letters P-T. P is a wave representing atrial depolarization‚ which causes the atria to contract‚ in response to electrical impulses sent from the SA node. The PR interval shows the time from the start of atrial depolarization to the start of the ventricular depolarization which follows it‚ which comes after a slight delay in receiving the impulses through the AV node. The QRS complex represents ventricular depolarization‚ and is always followed by a T wave which indicates the
Premium Heart Cardiology Cardiac electrophysiology
Name: ______________________________________ Date: ________________________ Student Exploration: Heat Transfer by Conduction Vocabulary: conduction‚ convection‚ insulate‚ radiation‚ thermal conductor‚ thermal energy‚ thermal insulator Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Suppose two frying pans have been left on the stove with the burners on. One of the frying pans has a metal handle and the other has a wooden handle. 1. Which handle do you think you could
Premium Heat Heat transfer Temperature
TITLE OF RESEARCH: “Oras Mo‚ Kaalam Ko”program. A response to poor Reading Comprehension Skills of 88 Grade 7 learners of Gil Montilla NHS- Cabadiangan Extension 2014-2015. TIME FRAME: November 2014 to February 2015 1. SITUATION English and Filipino teachers of Gil Montilla NHS-
Premium Reading comprehension Initiation Learning
neural and one glandular. Posterior Lobe (Neurohypophysis) – composed of nervous tissue; releases neurohormones that it receives ready-made from the hypothalamus; oxytocin and anti-diuretic hormone (ADH); released on demand in response to nerve impulses from hypothalamic neurons. Anterior Lobe (Adenohypophysis) – composed of glandular tissue; manufactures and releases its own hormones as a result of stimulation by releasing hormones from the hypothalamus; called the master endocrine gland; releases
Premium Hypothalamus Endocrine system Thyroid
Mark powers Period 2 C physics March 17 Thermodynamics lab I. The purpose of this experiment is to keep a certain amount of water as hot as possible for as long as possible. We also get to use whatever materials we want as long as our product is or is smaller than 20cm. II. For my project I used Styrofoam‚ tinfoil‚ insulation‚ silicone‚ and a cork. I used the Styrofoam as a box to put
Premium Heat Temperature Heat transfer
is non-zero‚ unlike an insulator‚ yet still several magnitudes smaller than that of a conductor. There exists a significant energy gap between the filled valence – highest range of electron energies normally present at absolute zero – and empty conduction bands – range of energies which are enough to unbind the electron from the atom and allow it to move freely within the atomic lattice – in a semiconductor‚ unlike a conductor which has very small or no band gaps and/or an insulator which has very
Premium Semiconductor Electron Electric current