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20 Cards in this Set

  • Front
  • Back
excess interstitial fluid
What is the main mechanism that moves lymph?
pressure of skeletal muscles
Blockage of the lymphatic system can cause what?
swelling as fluid accumulates in the tissues
-lymph capillaries

-collect fats from the small intestine and transport them to the circulatory system
Where does the lymphatic system join with the circulatory system?
thoracic duct
Lymph nodes contain...?

Lymph nodes do what...?

- filter lymph and remove foreign particles
Blockage of the thoracic duct would most likely affect the absorption of?
Gas exchange occurs in the...?
Note the primary respiratory structures an O2 molecule follows to reach the alveoli.
nares, pharynx, larynx, trachea, bronchus, bronchiole, aveolar ducts, aveolar sacs, alveoli
Why does the O2 in the alveoli flow down its partial pressure gradient from the alveoli into the pulmonary capillaries where it can bind to hemoglobin for transport?
the partial pressure of O2 is greater in the alveoli than in the capillaries
regulation of body temperature
Panting reduces body temperature by what...?
cooling of the lungs and subsequent cooling of blood through water evaporation from mucosal surfaces of the respiratory tract and saliva in the mouth

(heat energy is required for water to evaporate, evaporation facilitates cooling)
The cilia of the epithelial cells move gunk from the body to what?

(for expulsion via coughing or swallowing)
Ventilation depends on pressure changes where?
thoracic cavity
The pressure differential between the lungs and the interpleural space does what?
keeps the lungs inflated, preventing their collapse
Inhalation can also be called?
Negative-pressure breathing (air enters the lungs as the result of a vacuum that is created in them
Muscles in exhalation:

Muscles in inhalation:
exhalation: internal intercostal muscles and abdominals contract contract to compress lungs

inhalation: external intercostal muscles and diaphram contract to expand lungs
Respiration is controlled by what part of the brain?
medulla oblongata

(controls the rhythmic contractions in the diaphragm and intercostal muscles
A drop in blood pH stimulates what?
CO2 reacts with water to form what?
carbonic acid