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;
20 Cards in this Set
- Front
- Back
|
Aorta vs Vein blood flow |
Aorta: 80mmHg
Veins: 0
blood pressure drops as it hits capillaries and remains low through veins |
|
|
Biggest difference between veins and arteries |
Arteries carry blood away from heart Veins carry blood to heart
Arteries have elastin |
|
|
term for pumping away from heart term for heart filling |
systole diastole |
|
|
baroreceptors vs chemoreceptors |
baroreceptors: monitor blood pressure
chemoreceptors: monitor dissolved gasses (CO2) |
|
|
what occurs in the capillaries |
all gas, nutrient and waste exchange |
|
|
3 types of capillaries |
1. sinusoid: large particles in and out (whole blood cells) 2. fenestrated:large pores, large molecules 3. continuous: easy movement of small particles in and out |
|
|
3 circulatory routes |
1. simplest (1 bed) 2. portal (2 beds) 3. arteriovenous anastomosis (shunt) - bypass bed |
|
|
Collateral (alternative) Circulation |
Arteriovenous anastomosis (shunt) -artery empties into a vein -bypass exposed surfaces to directly service organs in cold weather |
|
|
Where does gas exchange take place? |
alveolar - capillary region |
|
|
Where are lobar arteries located? |
lungs (superior and inferior) - stem from the pulmonary artery |
|
|
three functions of lymphatic system |
1. fluid recovery (for blood system) 2. immunity - picks up foreign material, destroys it in lymph nodes via lymph cells 3. Lipid absorption - from digestive to blood |
|
|
lymphatic system is made up of (4) |
1. lymphatic organs 2. lymph 3. lymph vessels 4. lymph tissue (made of lymph cells) |
|
|
Flow of Lymph |
1. LYMPHATIC CAPILLARIES: blind ends of lymph ducts in capillary bed 2. NODES: flows through lymph nodes for processing 3. COLLECTING DUCT 4. LYMPH TRUNK 5. Thoracic duct (whole body) OR lymphatic duct (URQ)
|
|
|
Blocked lymph nodes can result in: |
Edema |
|
|
Primary Lymph organs |
1. Bone marrow 2. thymus
|
|
|
Secondary lymph organs |
1. spleen 2. tonsils |
|
|
Functions of primary lymph organs |
1. bone marrow: produces and develops lymphocytes into b-lymphocytes
2. thymus: develops lymphocytes into t-lymphocytes |
|
|
Functions of secondary lymph orgrans |
1.lymph nodes: only organ to filter lymph 2. spleen: red and white pulp 3. tonsils: palatine, lingual, pharyngeal - from nose and mouth. Crypts allow material to enter. |
|
|
MALT |
Mucosa-associated-lymph-tissue (found in organs, ex of permanent lymph nodes developed from MALT is peyers patch in intestines) |
|
|
Peyers Patch |
permanent lymph nodules developed from MALT at junction of small and large intestines |
