BIO 141 EXAM 3 QUESTIONS AND
ANSWERS
role of surfactant - Correct Answers -chemical produced by alveoli, ensures the the
water molecule bonds are weakened to alveoli walls do not stick together and collapse
When does infant respiratory distress syndrome (IRDS) occur? - Correct Answers -
when an infant is born before alveoli have started to produce surfactant. Causes alveoli
to collapse upon breathing, infant is unable to reinflate lungs.
Does surfactant work to weaken covalent bonds or hydrogen bonds in water molecules?
- Correct Answers -Hydrogen
pressure outside of lungs:
pressure inside of lungs: - Correct Answers -atmospheric
intrapulmonary
atmospheric pressure > intrapulmonary pressure
what happens - Correct Answers -inhaling, air enters lungs
intrapulmonary pressure < atmospheric pressure
what happens - Correct Answers -exhaling, air leaves lungs
when you exhale, the volume of your lungs goes ________ and the pressure goes
_______. - Correct Answers -down
up
the most important muscle in controlling respiratory pressure is - Correct Answers -the
diaphragm
connective tissue lining lungs - Correct Answers -visceral pleura
connective tissue lining inside of chest - Correct Answers -parietal pleura
visceral pleura and parietal pleura form - Correct Answers -a pleural cavity for each lung
fluid that causes the visceral pleura dan the parietal pleura to stick together, attaching
the lungs to the chest wall is - Correct Answers -pleural fluid
, when diaphragm contracts, it bulges down and out. what happens to intrapleural
pressure? - Correct Answers -it drops
respitory control center - Correct Answers -circuit of neurons in the base of your brain
that control the depth of your breathing. Located in the medulla oblongata and pons
lymphatic system is critical for circulatory system function and immune system. Site of
____ recovery and ____ cells - Correct Answers -fluid
immune
Two parts of lymphatic system: - Correct Answers -vessels that extend to all tissues
Organs and tissues that produce and maintain immune cells
Organs and tissues include: - Correct Answers -lymph vessels/nodes, tonsils, thymus,
spleen, bone marrow
lymphatic duct (thoracic duct) empties into _______.
lymphatic duct (right lymphatic duct) empties into ________. - Correct Answers -left
subclavian vein
right subclavian vein
flow of lymph: - Correct Answers -lympatic capillaries, to lymphatic vessels (contain
lymph nodes), to ducts, to subclavian veins
Lymph nodes contain: - Correct Answers -leukocytes that can ambush pathogens
Explain elephantiasis - Correct Answers -When a parasite infects lymph vessels, then
prevents reabsorption of lymph fluid. First causes edema (swelling) in limbs and over
time the limb stretches and thickens
Two ways body deals with pathogens: - Correct Answers -Nonspecific (innate) immunity
Specific (adaptive) immunity
Nonspecific (innate) immunity consists of: - Correct Answers -external barriers,
phagocytic Cells, immunological surveillance, complement system
Define nonspecific (innate) immunity: - Correct Answers -does not distinguish one type
of threat from another. Their response is the same regardless of the invader
(nonspecific resistance)
Adaptive (specific) immunity consists of: - Correct Answers -cell-mediated resistance- T-
cells
antibody-mediated resistance- B-cells
ANSWERS
role of surfactant - Correct Answers -chemical produced by alveoli, ensures the the
water molecule bonds are weakened to alveoli walls do not stick together and collapse
When does infant respiratory distress syndrome (IRDS) occur? - Correct Answers -
when an infant is born before alveoli have started to produce surfactant. Causes alveoli
to collapse upon breathing, infant is unable to reinflate lungs.
Does surfactant work to weaken covalent bonds or hydrogen bonds in water molecules?
- Correct Answers -Hydrogen
pressure outside of lungs:
pressure inside of lungs: - Correct Answers -atmospheric
intrapulmonary
atmospheric pressure > intrapulmonary pressure
what happens - Correct Answers -inhaling, air enters lungs
intrapulmonary pressure < atmospheric pressure
what happens - Correct Answers -exhaling, air leaves lungs
when you exhale, the volume of your lungs goes ________ and the pressure goes
_______. - Correct Answers -down
up
the most important muscle in controlling respiratory pressure is - Correct Answers -the
diaphragm
connective tissue lining lungs - Correct Answers -visceral pleura
connective tissue lining inside of chest - Correct Answers -parietal pleura
visceral pleura and parietal pleura form - Correct Answers -a pleural cavity for each lung
fluid that causes the visceral pleura dan the parietal pleura to stick together, attaching
the lungs to the chest wall is - Correct Answers -pleural fluid
, when diaphragm contracts, it bulges down and out. what happens to intrapleural
pressure? - Correct Answers -it drops
respitory control center - Correct Answers -circuit of neurons in the base of your brain
that control the depth of your breathing. Located in the medulla oblongata and pons
lymphatic system is critical for circulatory system function and immune system. Site of
____ recovery and ____ cells - Correct Answers -fluid
immune
Two parts of lymphatic system: - Correct Answers -vessels that extend to all tissues
Organs and tissues that produce and maintain immune cells
Organs and tissues include: - Correct Answers -lymph vessels/nodes, tonsils, thymus,
spleen, bone marrow
lymphatic duct (thoracic duct) empties into _______.
lymphatic duct (right lymphatic duct) empties into ________. - Correct Answers -left
subclavian vein
right subclavian vein
flow of lymph: - Correct Answers -lympatic capillaries, to lymphatic vessels (contain
lymph nodes), to ducts, to subclavian veins
Lymph nodes contain: - Correct Answers -leukocytes that can ambush pathogens
Explain elephantiasis - Correct Answers -When a parasite infects lymph vessels, then
prevents reabsorption of lymph fluid. First causes edema (swelling) in limbs and over
time the limb stretches and thickens
Two ways body deals with pathogens: - Correct Answers -Nonspecific (innate) immunity
Specific (adaptive) immunity
Nonspecific (innate) immunity consists of: - Correct Answers -external barriers,
phagocytic Cells, immunological surveillance, complement system
Define nonspecific (innate) immunity: - Correct Answers -does not distinguish one type
of threat from another. Their response is the same regardless of the invader
(nonspecific resistance)
Adaptive (specific) immunity consists of: - Correct Answers -cell-mediated resistance- T-
cells
antibody-mediated resistance- B-cells
