# Hemodynamics And The Urinary System - English - Homework Assignments

2207 words - 9 pages

Hemodynamics and the Urinary System
Hemodynamics:
● Blood pressure (mean arterial pressure)
- Hydrostatic pressure of blood against vessel wall
- mmHg
Blood Pressure:
● Systolic blood pressure (SBP)
- Pressure in arteries when ventricles contract
● Diastolic blood pressure (DBP)
- Pressure in arteries when ventricles relax
● Blood pressure = systolic bp/ diastolic bp
Mean Arterial Pressure (MAP)
● Include % of time spent in each phase of the cycle
● Why is the control of mean arterial pressure important?
1) To maintain and control blood flow (perfusion) to organs, tissues, etc.
2) To influence bulk movement (filtration) across capillary walls
Flow
● Blood flow (perfusion) = Amount blood/time moving past a given point or into or out
of an organ
● To change flow, must change pressure or resistance
Blood Pressure in Various Parts of the Cardiovascular System
● Roughly the same in aorta and arteries
● SBP and DBP disappear as you move towards capillaries
● Low pressure in capillaries
● Very low pressure in venules and veins
Blood Flow Between Two Points
● If R were very large, flow would be very small, moving toward 0
What Determines P and R at a Single Point?
Resistance
● Forces opposing liquid movement
● Resistance is influenced by several factors:
Resistance is Directly Proportional to:
● Viscosity of liquid (U)
- Composition
- Temperature
● Length of tube (L)
- Obesity
● Blood Volume (not in formula; assumed to be constant)
- But not if your bleeding
- Small changes in radius change resistance dramatically
- Immediate with autonomic nervous system
● Changing resistance changes:
- Pressure
- Flow
Arterial Blood Flow and Pressure
● Arterial blood flow:
- Amt/min coming out of LV
- Also called ​cardiac output​ (CO)
● In respiratory system:
- Amt/time = amt/breath X breaths/min
● In cardiovascular system:
- Amt/time = amt/beat X beats/min
● CO = amt/time
● Heart rate (HR) = beats/min
● Stroke volume (SV) = amt/be
Venous Blood Flow
● Venous flow mostly due to skeletal muscle contraction
Factors that Increase CO
Increase SV (Stroke Volume):
● Increase preload (stretch) increases force of contraction
- Frank-Starling law of the heart
● Increase strength of contraction:
● Increase of sympathetic nervous stimulation
● Hormones epinephrine and norepinephrine
● Increase calcium inflow
- Decrease amount of blood in ventricles at end of systole
● Hypertension and atherosclerosis increase afterload
Increase HR (Heart Rate):
● CV center in medulla oblongata
- Increase sympathetic nervous stimulation
- Decrease parasympathetic nervous stimulation
● Hormones: epinephrine and norepinephrine
● Increase calcium
● Age and gender
● Increase in temperature
Factors that Influence Blood Pressure
● Increased venous return
● Increased resistance
- Increase sympathetic
- Epinephrine and angiotensin
Factors that Influence Venous Return
● Skeletal muscle pump (valves)
● Respiratory pump
● Gravity
● Increased blood vol...

## Biology - Cardiovascular, Digestive, Respiratory And Urinary Systems - Touro College - Biology 101 - Cardiovascular System

2572 words - 11 pages ... Test #2 The Cardiovascular System: The Heart & The Blood Vessels: Function: To transport Oxygen (O2) to the cells & tissues in the body and remove Carbon Dioxide (CO2) Parts of the Cardiovascular System include: 1. The Heart – the pump 2. The Blood – the fluid 3. The Vascular System – a series of blood vessels The Heart: A hollow, muscular organ that lies between the lungs Parts: 1. Pericardium – a membrane that surrounds the outside of the ...

## Social Stratification In The Legal System - English And Anthropology - Essay

1016 words - 5 pages ... law. You believe that the judicial system is fair for everyone. There must be a nagging at the back of your mind that this isn’t true. I can show you with proof that this system is corrupted with social stratification. In truth, “criminals” are just as at fault as the criminal system that failed them. Unfair distributions of power and wealth amongst society create caste groups, and the subordinate group must endure more hardships, for example ...

## Analysis Of The Judicial System - English - Essay

807 words - 4 pages ... oppression towards black men. He is sentenced to death but Stevenson still takes on the case due to the fact there is no concrete evidence. Throughout the novel, Stevenson realizes the corruption of the judicial system, the immorality of the death penalty, and that society should choose mercy and empathy over cruelty and punishment. The judicial system during the 80’s failed Walter Mcmillan. He was wrongfully convicted of murder over no concrete ...

## Crayfish, The A Complete Classification, Habitat, Predator And Prey, Body Plan, Nervous System, Circulatory System, Digestive System, And Respiratory System

654 words - 3 pages ... well developed and its segmentation is easily noted. The crayfish has bilateral symmetry, anterior, posterior, dorsal, ventral, right, and left.Nervous SystemThe crayfish nervous system is composed of a ventral nerve cord fused with segmental ganglia, and the supresophageal and subesophageal ganglia. Giant neurons in the ventral nerve cord function in escape responses. The supraesophageal and subesophageal ganglia control the head appendages in ...

## The Integrated Emergency Alert And Warning System

3704 words - 15 pages ... via multiple outputs; technology that can reach special populations, such as, the hearing and visually impaired, and non-English speaking populations; redundancy; security; and reliability. IPAWS is available to alerting authorities at no cost, but requires compatible software. With all of its benefits, it is easy to see that the Integrated Public Alert and Warning System is an essential part of any effective emergency management plan ...

## An Essay On Why The Pledge Does Or Does Not Help Students' Education And The Educational System. - Woodland Hills Academy / English - Essay

448 words - 2 pages Free ... concerning the passage. If the youth of our nation can not perceive or interpret the pledge’s meaning, then what need is there to constantly restate the patriotic message. Therefore, there is no particular reason or need for anyone to be obligated to repeat the “Pledge of Allegiance”. The public school system in America should not preoccupy pupils with the restating of the “Pledge of Allegiance” and instead concentrate on the countless beneficial actions that could be done. ...

## Federalism And How It Effects The System - School - Research Paper

1096 words - 5 pages ... Destiny Rischpater Stages of Federalism Federalism is the mixed or compound mode of government, combining a general government with regional governments in a single political system. There was many stages that came into play to form this type of government style. During the time period of 1776-1860, America was primarily a rural nation of farmers. Many Americans rarely ever left their home state and many other Americans actually never once ...

## Children And The Criminal Justice System - Law - Essay

2202 words - 9 pages ... Children and the Criminal Justice System. Children Act, 2001 – · Became law in July 2001. Children in conflict with the law should only be detained by the state as a last resort. · There are many community based measures which must be explored and exhausted before detention can be considered. · What is a Minor – Section 3 Children Act 2001 – “child” means a person under the age of 18 years; (Removes any distinguishing classes of children e.g ...

## Will The Homework You Do In Grade School Benefit You? - English - Research Paper

1119 words - 5 pages ... Raby Will The Homework You Do In Grade School Benefit You? Kids should remember their childhood days playing with friends and family, not sitting in their room with their faces shoved in the books. There have been many reasons why younger kids should not have homework during their younger childhood. Students receiving homework in grade school is unnecessary because their parents are the ones who end up doing the homework when students really ...

## Several Analyses Of Poems And Short Stories With Citations - Enriched English - Homework Assignment

3019 words - 13 pages ... Redemption” focuses on Andy  Dufresne, who was sentenced to two consecutive life sentences for the framed murders of his wife  and her lover, and his time in Shawshank Prison. The author conveys the theme that hope is a very  powerful vessel.   In a system like Shawshank, designed to cripple personal identity and label individuals as                            unworthy of being normal members of society, Andy’s composure and confidence stand out from ...

## The Great Gatsby Critical Question From My Teacher - School Assignment - Homework Assignments

1609 words - 7 pages ... Nov 2 In Class 6 Due Nov 9 The Great Gatsby: Questions Chapters 4 – 6 You may work with 1 – 2 other people who is/are reading The Great Gatsby from the same critical perspective as yourself. If you work with partners, you should help one another as you answer the questions. Verbal Irony and Situational Irony There are two common types of irony in literature—verbal and situational. Verbal irony involves an incongruity between what appears to be ...

## The Effects Of The Feudal System On English Medieval Society - History Higher - Essay

729 words - 3 pages ... Phyllis Brady Access to Humanities A The Effects of The Feudal System on English Society in The Medieval Society The idea of Feudalism was first introduced in 1066, after William the conqueror defeated the Leader of the English, King Harold at the battle of Hastings. The Feudal system was a simple structure comprising of the upper classes such as Kings, the Church and landed classes and the lower classes such as the villeins and the peasants ...

## The Nervous System: A Basic Summary Of The Nervous System And Some Little Peices On How It Is Affected By Disease And Drugs

1560 words - 7 pages ... NERVOUS SYSTEM The Nervous system receives sensory input from the internal and external environment. It then integrates the input in the sensory centers of the brain and responds to the various stimuli with a motor output, which can be converted by the organs to some form of energy ie. movement, release of hormones, changes in heart rate. The response is not always conscious, for instance if you were climbing a mountain and the air became ...

## Doctrine Of Precedent In The Legal System Of England And Wales

895 words - 4 pages ... The legal system of England and Wales is a common-law-based system; this means that much of what is the law was an outcome of the common law rather than that of statutes. Within this ruling system lies the system of 'stare decisis', otherwise known as the doctrine of precedent. Ultimately, the basic theory of the doctrine of precedent is that all cases should be dealt with in the same way as any prior cases were by the courts and that the law is ...

## Jim Crow And The Criminal Justice System - Afro-american Studies 236 - Research Paper

2899 words - 12 pages ... Jim Crow and the Criminal Justice System Afroam 236 5/9/18 Although the Jim Crow era has long passed, African Americans are still strongly affected by it today. During the Jim Crow era, African Americans were forced into a second-class citizenship that intentionally put them at a great disadvantage. Jim Crow was a system of laws, customs and policies that worked to discriminate against African Americans in nearly every form of social, economical ...
Other Popular Examples