Physiology of Circulation
... • Neural controls are mostly reflex arcs which involve baroreceptors, the vasomotor center of the medulla oblongata, and vascular smooth muscle – vasomotor center controls vascular diameter – cardiac center adjusts cardiac output – Both centers make up the cardiovascular center ...
... • Neural controls are mostly reflex arcs which involve baroreceptors, the vasomotor center of the medulla oblongata, and vascular smooth muscle – vasomotor center controls vascular diameter – cardiac center adjusts cardiac output – Both centers make up the cardiovascular center ...
autorhythmic cell
... CVP is decreased during inspiration (negative pressure breathing) & shock. Increased by expiration&heart failure. ...
... CVP is decreased during inspiration (negative pressure breathing) & shock. Increased by expiration&heart failure. ...
Chapter 21: Blood Vessels and Circulation
... • When BP declines more than 35%: – Normal homeostatic mechanisms can no longer handle: • Sustained vasoconstriction • Mobilization of venous return ...
... • When BP declines more than 35%: – Normal homeostatic mechanisms can no longer handle: • Sustained vasoconstriction • Mobilization of venous return ...
3b CardioII-Vasculature
... between the blood and surrounding tissues Found in the liver, bone marrow, spleen ...
... between the blood and surrounding tissues Found in the liver, bone marrow, spleen ...
Relation of the Lungs to the Thoracic (Chest) Wall
... its elastic recoil) “try” to move ever so slightly away from each other, there occurs an infinitesimal enlargement of the fluid-filled intrapleural space between them. But fluid cannot expand the way air can, and so even this tiny enlargement of the intrapleural space—so small that the pleural surfa ...
... its elastic recoil) “try” to move ever so slightly away from each other, there occurs an infinitesimal enlargement of the fluid-filled intrapleural space between them. But fluid cannot expand the way air can, and so even this tiny enlargement of the intrapleural space—so small that the pleural surfa ...
13 Renal Clearance overview
... too high (above homeostatic levels; plasma is too concentrated: too many electrolytes and not enough water is in the plasma), it tells the pituitary gland to release ADH (antidiuretic hormone) to cause the kidneys to retain additional water to dilute the plasma. This will make the low blood pressure ...
... too high (above homeostatic levels; plasma is too concentrated: too many electrolytes and not enough water is in the plasma), it tells the pituitary gland to release ADH (antidiuretic hormone) to cause the kidneys to retain additional water to dilute the plasma. This will make the low blood pressure ...
Blood Pressure - Doctor Jade Main
... equation shows blood flow is directly proportional to pressure gradient & inversely proportional to resistance higher PRlower rate of blood flow pressure gradient must be greater than total peripheral resistance for blood to flow vascular resistance is the opposition to blood flow due to friction b ...
... equation shows blood flow is directly proportional to pressure gradient & inversely proportional to resistance higher PRlower rate of blood flow pressure gradient must be greater than total peripheral resistance for blood to flow vascular resistance is the opposition to blood flow due to friction b ...
Blood Pressure and Pulse BIOL 204, Section 550 Lab Report By
... after the physical or emotional stressor has subsided, the cardioinhibitory center sends a signal to the parasympathetic nervous system to reduce the heart rate so the person can relax. (Marieb & Hoehn, 2010) The purpose of lab six, entitled Blood Pressure and Pulse is to demonstrate blood pressure ...
... after the physical or emotional stressor has subsided, the cardioinhibitory center sends a signal to the parasympathetic nervous system to reduce the heart rate so the person can relax. (Marieb & Hoehn, 2010) The purpose of lab six, entitled Blood Pressure and Pulse is to demonstrate blood pressure ...
File - Doctorswriting
... A. resistance is inversely proportional to the square of the radius B. the wall tension necessary to balance transmural pressure is inversely proportional to the radius (PT/R) C. velocity is equal to flow for any given diameter D. flow and resistance are both related, reciprocally, to the radius to ...
... A. resistance is inversely proportional to the square of the radius B. the wall tension necessary to balance transmural pressure is inversely proportional to the radius (PT/R) C. velocity is equal to flow for any given diameter D. flow and resistance are both related, reciprocally, to the radius to ...
File - Doctorswriting
... B. Transmitters are released from synaptic knobs secondary to Na trigger C. Amount of transmitter released is proportional to Ca efflux D. Ach is present in granulated vesicles in synaptic knob E. The EPSP is caused by Na influx 9. Which of the following is an inhibitory neurotransmitter A. Gallamin ...
... B. Transmitters are released from synaptic knobs secondary to Na trigger C. Amount of transmitter released is proportional to Ca efflux D. Ach is present in granulated vesicles in synaptic knob E. The EPSP is caused by Na influx 9. Which of the following is an inhibitory neurotransmitter A. Gallamin ...
Physiology en
... What is the difference between the right and the left lung? The trachea is made of open cartilaginous rings. What is the function of these rings? Why is the trachea made of approximately 20 rings and not as a continuous tube? What is the function of the opening in the cartilaginous rings? Try to est ...
... What is the difference between the right and the left lung? The trachea is made of open cartilaginous rings. What is the function of these rings? Why is the trachea made of approximately 20 rings and not as a continuous tube? What is the function of the opening in the cartilaginous rings? Try to est ...
Notes - Academic Computer Center
... b. Medulla oblongata also contains a cluster of neurons known as the vasomotor center. (VMC) i. It works toward shortterm BP control as well as altering blood distribution during special situations (e.g., exercise). ii. Increased VM activity leads to increased sympathetic NE release on arteri ...
... b. Medulla oblongata also contains a cluster of neurons known as the vasomotor center. (VMC) i. It works toward shortterm BP control as well as altering blood distribution during special situations (e.g., exercise). ii. Increased VM activity leads to increased sympathetic NE release on arteri ...
Slide 1 - OCCC.edu
... Ventilation occurs due to differences in pressure Humans mechanically produce an internal pressure that is less than the atmospheric pressure This is called negative pressure ...
... Ventilation occurs due to differences in pressure Humans mechanically produce an internal pressure that is less than the atmospheric pressure This is called negative pressure ...
19 - FacultyWeb Support Center
... • Large lumen offers low-resistance • Act as pressure reservoirs—expand and recoil as blood is ejected from the heart Muscular (Distributing) Arteries and Arterioles • Distal to elastic arteries; deliver blood to body organs • Have thick tunica media with more smooth muscle • Active in vasoconstrict ...
... • Large lumen offers low-resistance • Act as pressure reservoirs—expand and recoil as blood is ejected from the heart Muscular (Distributing) Arteries and Arterioles • Distal to elastic arteries; deliver blood to body organs • Have thick tunica media with more smooth muscle • Active in vasoconstrict ...
Control of arterial blood pressure
... Baroreceptor reflex action Vasomotor center: Center in the brain Chemoreceptors that controls the changes in the diameter of blood vessels (Cause blood vessels to be in moderate constriction) ...
... Baroreceptor reflex action Vasomotor center: Center in the brain Chemoreceptors that controls the changes in the diameter of blood vessels (Cause blood vessels to be in moderate constriction) ...
Unit One: Introduction to Physiology: The Cell and General Physiology
... Physiologic Anatomy of Urinary Bladder • Micturition-process by which the urinary bladder empties when it becomes filled a. The bladder fills progressively until the tension within the walls rises above a threshold level b. The micturition reflex empties the bladder or stimulates a conscious desire ...
... Physiologic Anatomy of Urinary Bladder • Micturition-process by which the urinary bladder empties when it becomes filled a. The bladder fills progressively until the tension within the walls rises above a threshold level b. The micturition reflex empties the bladder or stimulates a conscious desire ...
Patent ductus arteriosus, bottle-meal, and fatal myocardial ischemia
... and respiratory distress syndrome; ST-depressions disappeared after surgical PDA ligation (7). ...
... and respiratory distress syndrome; ST-depressions disappeared after surgical PDA ligation (7). ...
stretch reflex 2
... 6 & area 4s on the stretch reflex & muscle tone is inhibitory, so a lesion causing damage of area 4, 4s & 6 (UMNL) leads to increase in muscle tone •In animals the separation between the cerebral cortex & brain stem leads to marked increase in muscle tone due to the removal of the net inhibitory eff ...
... 6 & area 4s on the stretch reflex & muscle tone is inhibitory, so a lesion causing damage of area 4, 4s & 6 (UMNL) leads to increase in muscle tone •In animals the separation between the cerebral cortex & brain stem leads to marked increase in muscle tone due to the removal of the net inhibitory eff ...
Review for Medical Physiology
... (3) Myocardial contractility; (4) Heart rate. 14. Describe the structure and function of the conduction system of the heart, and compare the action potentials in each part of it with those in cardiac muscle. (in very brief description) ...
... (3) Myocardial contractility; (4) Heart rate. 14. Describe the structure and function of the conduction system of the heart, and compare the action potentials in each part of it with those in cardiac muscle. (in very brief description) ...
Pulse
... Cyanosis - bluish tinge caused by decrease in O2 in RBC. Cyanosis is assessed by checking the mucous membranes of the conjunctiva (lower eyelids), under the tongue and inside the mouth..should be pink not pale or bluish ...
... Cyanosis - bluish tinge caused by decrease in O2 in RBC. Cyanosis is assessed by checking the mucous membranes of the conjunctiva (lower eyelids), under the tongue and inside the mouth..should be pink not pale or bluish ...
The Blood Vessels
... Circulatory Physiology Factors Assisting Venous Return • Low venous resistance • Valves in veins • Compression of veins by muscular contraction • Respiratory pump pulls blood into thorax • Atrial suction, as the atria relax, pressure within the atria may drop below zero • This just increases the pr ...
... Circulatory Physiology Factors Assisting Venous Return • Low venous resistance • Valves in veins • Compression of veins by muscular contraction • Respiratory pump pulls blood into thorax • Atrial suction, as the atria relax, pressure within the atria may drop below zero • This just increases the pr ...
Fundamentals II
... ventricle contracts - Systolic pressure Lowest BP is when the heart rests Diastolic pressure Pulse pressure is the difference between the Systolic and Diastolic pressures BP 140/90 PP (pulse pressure) = 50 ...
... ventricle contracts - Systolic pressure Lowest BP is when the heart rests Diastolic pressure Pulse pressure is the difference between the Systolic and Diastolic pressures BP 140/90 PP (pulse pressure) = 50 ...
Blood Pressure - bloodhounds Incorporated
... Select the correct statement about factors that influence blood pressure A. An increase in cardiac output corresponds to a decrease in blood pressure, due to the increased delivery B. Excess red cell production would cause a blood pressure increase C. Excess protein production would decrease blood ...
... Select the correct statement about factors that influence blood pressure A. An increase in cardiac output corresponds to a decrease in blood pressure, due to the increased delivery B. Excess red cell production would cause a blood pressure increase C. Excess protein production would decrease blood ...
Cushing reflex
Cushing reflex (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing's Law) is a physiological nervous system response to increased intracranial pressure (ICP) that results in Cushing's triad of increased blood pressure, irregular breathing, and a reduction of the heart rate. It is usually seen in the terminal stages of acute head injury and may indicate imminent brain herniation. It can also be seen after the intravenous administration of epinephrine and similar drugs. It was first described in detail by American neurosurgeon Harvey Cushing in 1901.