Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
Blood
|
Only fluid tissue in the human body; connective tissue
|
|
|
Components of blood
|
Living cells; formed elements; non living matrix; plasma
|
|
|
Hematocrit
|
45% of blood
|
|
|
Buffy coat
|
Contains leukocytes and platelets ( less than 1% of blood); thin whitish layer between RBC and plasma
|
|
|
Plasma
|
Rises to the top (55% of blood)
|
|
|
Blood plasma
|
Composed of approximately 90% water
|
|
|
Dissolved substances of blood plasma
|
Nutrients, salts, respiratory gases, hormones, plasma proteins, waste products
|
|
|
Plasma protein
|
Most abundant solutes in plasma; most are made by liver
|
|
|
Albumin
|
Regulates osmotic pressure
|
|
|
Clotting proteins
|
Help to stem blood loss when a blood vessel is injured
|
|
|
Antibodies
|
Help protect the body from pathogens
|
|
|
Acidosis
|
Blood becomes too acidic
|
|
|
Alkalosis
|
Blood becomes too basic
|
|
|
Anatomy of erythrocytes
|
Biconcave disks; essentially bags of hemoglobin; anucleate; contain very few organelles;
|
|
|
Hemoglobin
|
Iron-containing protein; binds strongly, but reversible to oxygen
|
|
|
Hemoglobin
|
Each RBC has 250 million of these molecules
|
|
|
Hemoglobin
|
Normal blood contains 12-18g of this per 100mL of blood
|
|
|
Anemia
|
Decrease in the oxygen-carrying ability of the blood
|
|
|
Sickle cell anemia
|
Results from abnormally shaped hemoglobin
|
|
|
Polycythemia
|
An excessive or abnormal increase in the number of RBCs
|
|
|
WBCs
|
Crucial in the body's defense against disease
|
|
|
Diapedesis
|
The ability to move into and out of blood vessels
|
|
|
Leukocytosis
|
WBC count is above 11,000; generally indicated an infection
|
|
|
Leukopenia
|
Abnormally low leukocyte level; commonly cause by certain drugs
|
|
|
Leukemia
|
Bone marrow becomes cancerous, turns out excess WBC
|
