Chapter 7 Flashcards
Exam 3
Circulatory System consists of
Heart, blood vessels, blood
Circulatory system works with these other systems (3)
1) Digestive
2) Urinary
3) Respiratory
Functions of the Circulatory System (5)
1) Pick up nutrients
2) Exchanges gases (CO2 and 02)
3) Carries waste and excess water to the urinary system
4) Carries metabolic waste for removal (poop)
5) Helps with temp regulation
Blood consists of (3)
1) Specialized Cells
2) Cell Fragments
3) Watery solution of ion and molecules
Functions of Blood (3)
1) TRANSPORTATION (nutrients, waste, hormones)
2) REGULATION (body temp, water volume, pH)
3) DEFENSE (against infection and bleeding)
55% of blood
Plasma
consists of electrolytes, proteins, hormones, nutrients, gases, and waste
Plasma
Is blood blue
no
44% of blood is
Red Blood cells
1% of blood is
White blood cells and platelets
Plasma is 90% ____ and 10%____
water, disolved solutes
Proteins in the Plasma (2)
1) Albumins
2) Globulins
plasma protein, maintains osmotic balance with interstitial fluid
Albumins
fluid between cells
Interstitial fluid
plasma proteins, diverse
Globulin
Types of Globulins (3)
1) alpha
2) beta
3) gamma
Type of Globulin, has important transport functions (bind to lipid forming lipoproteins)
Beta Globulin
“Bad” cholesterol
(LDL) Low density lipoprotiens
Type of globulin, contains antibodies that are part of the bodies defenses against infections
Gamma Globulin
Other name for RBCs
Erythrocytes
a protein that transports O2
Hemoglobin
in a hemoglobin molecule, has iron atoms to which O2 binds
heme groups
origin of rbcs
stem cells in bone marrow
How long do RBCs live
120 days
What controls the production of RBCs
erythropoietin hormone (EPO)
O2 carrying capacity is reflected by (2)
hematocrit and hemoglobin
the percent of whole blood that consists of RBCs
hematocrit
Usual measurement of hemaglobin
12-18%, depending on person
Low hematocrit/hemaglobin may indicate
Anemia
High hematocrit/hemaglobin may be in response to
High Elevation
Condition where blood vessels contstrict, causing high pressure in lungs, and fluid leaks into lungs
HAPE (High Altitude Pulmonary Edema)
Air sacs of lungs
Avioli
All blood cells and platelets originate from
Stem Cells
immature RBCs
erythroblasts
erythroblasts transform to _____ in bone marrow then release into blood
erythrocytes
Aged RBCs are removed by____ in the
macrophages, liver and spleen
heme is converted to this and discarded thru poop
bilirubin
buildup of bilirubin in tissues, liver isn’t working properly
jaundice