Cells form 4 basic tissue groups:  , , and .  Connective tissue includes hematological tissue.

Cells live in a fluid environment of which water is the main component.

Our body is made up of % water and the rest is tissue weight.

1.      Water is the medium in which all metabolic reactions occur.

2.      Water allows for precise regulation of volume and composition of body fluid.

The human body has (#)  fluid compartments.

  1. fluid is found inside the cells. Accounts for % of all total body weight.
  2. fluid is found outside the cells which includes; intravascular and interstitial compartments. Accounts for % of all total body weight.

fluid  is fluid between the cells and outside the vascular bed.  Includes the fluid in connective tissue, bones, cartilage and CSF.   Interstitial fluid accounts for % of total body weight.

Tom’s language;  You have fluid in all cells generically called Intracellular fluid.  Extracellular fluid is in two places.  It is in the blood vessels but outside the cells (blood plasma) called intravascular.  Extracellular fluid is also outside the body cells and outside the blood vessels and is call the interstitial spaces.  Interstitial space would be the area of swelling when you break an ankle. The fluid (edema) is not in the blood vessels.  It is not in the cells.  It is outside the blood vessel and outside the cells and is called interstitial.
 

We also have to look and defines space as intravascular and extravascular.  Within the blood vessel is termed space.  Outside the blood vessel is termed space .

Water Movement:
 

Water is termed and is termed the molecules or substance within the fluid.

Water has to move from one compartment to another constantly to maintain (balance).

  1. is the movement of water through membranes.  No energy needed.  Water (solvent) moves from solute concentration to solute concentration.

Note: Osmosis is related to water movement.  If the osmosis is happening to a gas it is called pressure and is driven by partial pressure.

Tom’s language; You have just made two containers of KoolAid.   Container A has two cups of KoolAid mix and the other container B has one cup of KoolAid mix.  Both containers have the same amount of water at the start – 2 litters.  You need to balance the taste.  So water moves from container B to container A.  This will dilute the taste of container A but at the same time increase the taste of container B.

  1. is constant, random motion of all the atoms in a solution.  Does not require energy to work.  This is the movement of which is the molecules in water. 

 Tom’s language;  When you fart the smell (solute) is very concentrated at the anus.  As time passes the smell is diffused into the room.  This will happen until the smell has become neutral in the room and a balance has been reached.  If you keep farting the smell will overcome the room and will constantly smell.  That is until a window is open to reach a fresh balance.

  1. is a carrier-mediated process that can move substances from areas of solute concentration to solute concentrations.  It works the gradient.  This takes energy.  Active transport works than diffusion. 
  2. is a carrier-mediated process that moves substances into and out of cells from to solute concentrations.  Does not require energy. 

Solutions

  1. solutions have a higher concentration of solute than that inside the cells. Causes cells to (crenation).  Examples are; sodium bicarb, D50%
  2. solutions have a solute concentration lower than that of the cell.  Moves solution into the cells and causes of the cell.  Examples are; 0.45%NS, D5W.
  3. solutions have equal molecules inside and outside the cells.  Examples; 0.9%NS and lactated ringer’s.

Anatomy of Capillary Network

Capillary is a thin-walled tube of endothelial cells without elastic tissue resulting in a pressure.

1.      Capillary sphincters – are located just before the capillary and just after leaving the capillary. Precapillary sphincter and postcapillary sphincter.

2.      These sphincters control capillary blood flow by opening and closing. 

shunts skip the capillary tissue.  They go from arterial to venous side.  Examples; palm, phalanges, nail bed.   AV shunts are important part of regulation.  When arterial blood pressure is normal the AV shunts .  If pressure increased the AV shunts .  This helps regulate our BP and temperature.  The term shunting blood.

Diffusion across the capillary wall:  Tissue cell cannot exchange material directly with blood.  The fluid acts as a middle man. 

 Tom’s language; In a divorce with children.  The mother gives the kids to the social worker and the social worker gives the kids to the dad - back and forth.  This is why plasma is so important.

  1. Plasma pressure proteins move fluid via pressure.  The protein is .  Albumin cannot cross the semipermeable membrane but does take up space resulting in pressure.
  2. Changes in the capillary membrane may cause proteins to cross into the interstitial space.  This causes tissue edema.

Plasma protein albumin creates pressure. 

Tom’s language;  When the presphincter opens and too much pressure builds the capillary membrane may allow proteins to exit in the interstitial space.  As a result fluid is drawn into the interstitial space resulting is edema.

Note:  Fluid that collects in the peritoneal cavity is called .

Water Balance:

1.      Water balanced is achieved primarily by hormone which is released from the pituitary gland.  Water is stimulated to be reabsorbed into the plasma from the distal renal tubules and collecting ducts of the kidneys. 

2.      Volume-sensitive receptors and (found in the  Atriums, Pulmonary vessels, Carotid, and Aorta) also can stimulate ADH release. 

3.      (ethanol or ingestible alcohol i.e. in beer, wine, hard liquor) and (coffee, some teas and power so-called energy drinks) directly inhibit ADH. 

Tom’s language;  Water follows sodium.  Sodium is the major extracellular cation of the body.  If more plasma/fluid is going into the kidneys then sodium is also going.  Water follows the sodium and as a result we produce more urine. Caffeine and Booze inhibit ADH and that is why we pee a lot after we drink them. 

Aldosterone is released from the gland.  Aldonsterone is stimulated to be released when sodium levels are or potassium levels are . As a result the the kidneys are stimulated to reabsorb and eliminate

The kidneys release hormone when circulating blood volume is reduces.  Renin stimulates the formation of .  This is then changed to which is a potent vasoconstrictor.  stimulates the release of hormone from the posterior pituitary.  An Angiotension-converting enzyme (ACE) inhibitor will the BP.

Electrolytes

  1. Predominant (positive);
    1. Intracellular – (K+), (Ca++), Mg++)
    2. Extracellular – (Na+)

       
  1. Predoninant (negtive);
    1. Intracellular – (PO4/3-)
    2. Extracellular – Chloride (Cl-), Bicarbonate (HCO3-)

Electrolyte Imbalances

  1. is a major positively charged ion within cells.  The body must maintain a narrow range for normal nerve, cardiac, and function.
    1. Extra potassium is eliminated in the kidneys.
    2. – most common cause is diuretic use.
    3. – poor kidney function, burns, severe infection.
    4. Care for excessive hyperkalemia is calcium, insulin and glucose.

       
  1. – Cation within the cells with two positive charges.  Helps with transmission, growth, health of bones, muscle contractions.
    1. – results from endocrine problems with parathyroid, renal failure, inability to active vitamin D.
    2. Care: vitamin D, calcium
    3. – cause by tumors, thyroid dysfunction, diuretic therapy.
    4. Care; treat the causing disease, lasix, steroids.

Acid Base:

·        7.35 to is normal range for pH. pH stand for of hydrogen.

·        H+ stand for ion and think of  it as an acid.  The more H+ the more acidic.

·        We neutralize/eliminate H+ by:

1.      Systems – made of  carbonic acid and bicarbonate bonds.

2.      Lungs and breathing out CO2.

3.      Kidneys eliminating H+ with urine.

How it works.  CO2 + H2O (transfers back and forth) H2CO2 (transfers back and forth) H+ + HCO3-

CO2 is carbon dioxide

H2O is water

H2CO2 is carbonic acid

H+ is hydrogen ion

HCO3- is bicarbonate

________________________

Respiratory acidosis is when an increase of and H2O combine into acid.

Metabolic acidosis is when an increase of and HCO3- combine into acid.

The following is respiratory acidosis, respiratory alkalosis, metabolic acidosis or metabolic alkalosis?

¯CO2 + H2O ® ¯H2CO3- ® ¯ H+ + HCO3-

The following is respiratory acidosis, respiratory alkalosis, metabolic acidosis or metabolic alkalosis?

¯H+ + HCO3- ® ¯H2CO3- ® H2O  + ¯CO2

The following is respiratory acidosis, respiratory alkalosis, metabolic acidosis or metabolic alkalosis?

(increase of CO2) ­CO2 + H2O ® ­H2CO3- ® ­H+ + HCO3-

The following is respiratory acidosis, respiratory alkalosis, metabolic acidosis or metabolic alkalosis?

(increase of H+) ­H+ + HCO3- ® ­H2CO3- ® H2O  + ­CO2

Blood Gasses

Normal blood gas values;

  1. PaO2 is to 100
  2. PaCO2 is to 45
  3. pH is to 7.45

What is the following ABG telling us:

PaO2

PaCO2

pH

Result

90

30

7.45

60

60

7.35

85

42

7.47

85

42

7.34

Pitting edema scale:

 - Gross deformity.  Longer than 2 min.
 - Depression disappears 10 to 15 seconds.
 - Noted deformity of skin.  More than 1 min.
 - Depression disappears quickly
 

Terms:

- decrease in cell size
- Increase in size of cells
- Increase of number of cells
- Cells change to adapt - smokers
- Abnormal changes in mature cells
 

Cardiac Output:

Cardiac output is also known as volume.  Cardiac output depends on three things:

  1. of contractions
  2. of contractions
  3. Amount of blood return know as preload.

is termed systemic vascular resistance on the left side of the heart.

feedback mechanisms is any mechanism that tends to balance a change in the system. 

are pressure sensitive nerve endings located in the atriums, pulmonary, carotid, and aorta.  Baroreceptors do not work if the BP is less than 60 mmHg. 

O2 register low arterial pressures of hypoxemia and/or acidosis. O2 Chemoreceptors are found in the carotid and aortic vessels. 

CO2 Medulla Chemoreceptor is the breathing drive in a healthy person.

Types of shock:

- Most often caused by hemorrhage or severe dehydration.

- Heart pumping inadequate.

- Spinal cord injuries

- Severe allergic reaction

- Serious systemic infection

- Shock from diabetes would be termed this.

Inflammatory Response:

Inflammation is a response to cellular injury.  An is a substance that causes the formation of an antibody.  engulf, digest and destroy pathogens.  Mast cells are specialized cells which are widely distributed in connective tissue.  Mast cells contain .

Immune Response:

The immune system is triggered after foreign materials have been cleared from the area of inflammation.  This is after phagocytes do their job.  Lymphocytes mutate into B and T lymphocytes.  B produce .  T cells can act directly on the foreign antigen. 

Blood groups:

A = Accounts for 38%.
AB = Only accounts for about 4%.  This blood type is referred to as the universal .
B = Accounts for 11%.
O = Most common blood type. This blood type is referred to as the universal .

RH Factor was named after a species of monkeys (rhesus) that when monkey blood was added to rabbit blood then added to a human red blood cell the blood

Allergens provide immune system to respond -  immediate or delay.  accounts for less than 1% of antibodies but causes the most severe  reactions.  IgE stimulates cells for immediate response. 

IgG accounts for 70% of antibodies in normal serum.  IgG is the only immunoglobulin which crosses the membrane.  IgG is found in lymph, CSF, synovial, peritoneal, and breast milk. 

IgM are antibodies that trigger the release of IgG.

IgA is found in blood, tears, saliva, respiratory track, and stomach.

IgE triggers mast cells in immediate allergic reactions.

IgD at this time it is an unknown function.

Catecholamines:

Catecholamines are released from the adrenal gland when stressed.  Catecholamines are epi, nor epi, and dopamine.   Adrenocorticotropic (ACTH) from the pituitary stimulates the adrenal glands. 

Two major classes of catecholamine actions; alpha 1, alpha 2, and beta 1 and beta 2. 

Beta 1 = contractions. 
Beta 2 = smooth muscle relaxation of and GI muscles.  Increase release of insulin and glucagon, and renin. 
Alpha 1 = Smooth muscle contraction in blood vessels and genitourinary track.
Alpha 2 = GI smooth muscle relaxation.  Does the opposite of beta 2 hormone release.

Note:  We have four main neurotransmitter within the brain; , ACh, nor-epi and .

Seratonin = is the feel good stabilizer.  Sleep state.
Domamine = is motor impulses stabilizer. 
Nor-epi = arousal
ACh = short term memory, learning.


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