1|Page
BIOL 320 EXAM 2 2025 WITH
ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED
ANSWERS
Collect lymph in all tissues; one way system to heart
,2|Page
- ANSWER-Lymph capillaries
Very loose and leaky; increased tissue pressure opensflaps
to absorb lymph fluid - ANSWEREndothelial lining
What does lymph collect? - ANSWER-Fluid
Proteins
Wastes
Cells
Route of lymphatic drainage - ANSWER-Capillaries
Collecting vesswels
Lymph nodes
Trunks
Ducts
Subclavian veins
Pick up microbes, trash, differentiate from monocytes in
tissue - ANSWER-Macrophages
,3|Page
Protect body against antigens; mature into attach cells -
ANSWER-Lymphocytes
Activated by thymus; direct the immune response -
ANSWER-T lymphocytes
Activated in bone marrow; produce antibodysecreting
plasma cells - ANSWER-B lymphocytes
Where are the regional lymph nodes? - ANSWER-
Cervical
Axillary
Inguinal
Volume of lymph fluid - ANSWER-about 1.5 ml/min;
2.16 L/day
Lymph node function - ANSWER-Isolate and destroy
foreign substances
, 4|Page
On the way in, there are more (afferent/efferent) vessels -
ANSWER-Afferent
What are the first and second line of innate defense
- ANSWER-Surface barriers
Internal defenses
3rd line of defense; fights against specific foreign
substances, takes a little longer to activate - ANSWER-
Adaptive defenses
Types of adaptive defenses - ANSWER-Antigens
Cells of adaptive immune system
Humoral immune response
Cell mediated immune response
Homeostatic imbalance
Low pH (3-5); inhospitable to bacteria, sebum contains
toxins against bacteria - ANSWER-Skin
BIOL 320 EXAM 2 2025 WITH
ACTUAL CORRECT QUESTIONS
AND VERIFIED DETAILED
ANSWERS
Collect lymph in all tissues; one way system to heart
,2|Page
- ANSWER-Lymph capillaries
Very loose and leaky; increased tissue pressure opensflaps
to absorb lymph fluid - ANSWEREndothelial lining
What does lymph collect? - ANSWER-Fluid
Proteins
Wastes
Cells
Route of lymphatic drainage - ANSWER-Capillaries
Collecting vesswels
Lymph nodes
Trunks
Ducts
Subclavian veins
Pick up microbes, trash, differentiate from monocytes in
tissue - ANSWER-Macrophages
,3|Page
Protect body against antigens; mature into attach cells -
ANSWER-Lymphocytes
Activated by thymus; direct the immune response -
ANSWER-T lymphocytes
Activated in bone marrow; produce antibodysecreting
plasma cells - ANSWER-B lymphocytes
Where are the regional lymph nodes? - ANSWER-
Cervical
Axillary
Inguinal
Volume of lymph fluid - ANSWER-about 1.5 ml/min;
2.16 L/day
Lymph node function - ANSWER-Isolate and destroy
foreign substances
, 4|Page
On the way in, there are more (afferent/efferent) vessels -
ANSWER-Afferent
What are the first and second line of innate defense
- ANSWER-Surface barriers
Internal defenses
3rd line of defense; fights against specific foreign
substances, takes a little longer to activate - ANSWER-
Adaptive defenses
Types of adaptive defenses - ANSWER-Antigens
Cells of adaptive immune system
Humoral immune response
Cell mediated immune response
Homeostatic imbalance
Low pH (3-5); inhospitable to bacteria, sebum contains
toxins against bacteria - ANSWER-Skin
