PPT-Exploring the Ventricles of the Brain

Using a FourStep Systematic Approach by Natascha Heise Katelyn E Brown and Tod R Clapp  Eastern Virginia Medical School Norfolk VA  Department of Biomedical Sciences Colorado State University Fort Collins CO. Cycle: . diastole Phase. A heartbeat is a two-part pumping action that takes about a second. . This part of the two-part pumping phase (the longer of the two) is called . diastole. .. Diastole. begins as the ventricles start to relax. Soon the pressures within the aorta and pulmonary artery exceed ventricular pressures, causing the . Approach to Head CT. Rapid Assessment of CT head or . Do I need to call a Neurosurgeon NOW!!!. Is the brain in the middle of the head?. Do the 2 sides of the brain look alike?. Can I see the smile and the pentagon?. Central . - brain and spinal cord. Peripheral . - spinal nerves, motor and sensory nerves. Spinal and cranial meninges. fish - one layer. tetrapods. 2 or 3 (mammals). Meninges. Subarachnoid . space of brain. Rhythm refers to the regularity . or spacing . of the ECG waves. Any variation from the . normal rhythm . and sequence of excitation of the heart is termed . an arrhythmia.. Or simply. Abnormal rhythm of heart is called arrhythmia.. Brain Stem. Oldest and smallest region. Controls life itself. Governs basic, but critical survival needs. Heart actions. Digestion. Circulation. Breathing. Deeply instinctual and ritualistic. Executes the flight, fight, or freeze response. 1. The Nervous System can be divided in: . Central Nervous System (CNS). Brain and Spinal Cord. Peripheral Nervous System (PNS). Cranial and spinal nerves, ganglia, sensory receptors. 2. Division of the Peripheral Nervous System. A map of your life. Drawing and sculpting change. Images of migration . into drama. The suggestions offered allow the students to probe more deeply the themes of the play. . Teachers . can select and adapt these ideas to meet the needs and interests of particular students. . THE CIRCULATORY SYSTEM Ch. 18 The HEART ASSIGNMENT : Most Of The Anatomy We Have Already Done In The Lab, So Make Sure To Do The * of slide 1 through 29. As I Will Likely Not Take The Time To Review This Material. Pacemaker. A specific region of your heart muscle . sets the rate at which your heart contracts. . The pacemaker. . located in the wall of the right atrium. . (SA Node). generates electrical impulses that spread rapidly over the walls of both atria, making them contract. . Older Brain Structures. The. Brainstem. . is. . the oldest part of the brain, beginning where the spinal cord swells and enters the skull. It is responsible for automatic survival functions.. 2. Brainstem. Raul. Guide . : Dr S . S. . Pawar. . Madam. . . 1. Introduction. Derived from Greek word “. Hydro. ” meaning “Water”, and “. Cephalus. ”, . meaning . “Head”.. Excessive accumulation of cerebrospinal fluid (CSF) resulting in abnormal widening of the spaces in the brain.. Jazmine . Boloor. PATIENT IN AVRT: EKG. DELTA WAVE: . SA node triggers, sends signal to AV node and accessory pathway. AV node has a safeguard to slow the signal down so the ventricles can fill. Accessory pathway doesn’t have safeguard, meaning the signal can very quickly travel from the atria down, depolarizing the ventricles. This creates a slurred upstroke, as the P wave is closely coupled with the QRS. Once the signal gets through the AV node, it travels very quickly through the circuit of the heart and up the accessory pathway, creating a sharp downwards wave as the ventricles depolarize. . At a normal heart rate of 75 beats per minute, one cardiac cycle lasts 0.8 second. Under resting conditions, systole occupies ⅓ and diastole ⅔ of the cardiac cycle duration. Pressure As a chambe Introduction. Brain is that portion of the central nervous system which is contained with the cranium.. . One. . of the largest organs of the body, about 100 billion neurons & 10-50 trillion neuroglia make up the brain, which has a mass of about 1300 gm. or 1.3-1.4 kg. in adults..