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67. How does your circulatory and respiratory
systems work together to maintain homeostasis?
Respiratory system takes in
oxygen and releases carbon
dioxide that it takes from you
circulatory system.
68. What endocrine gland and hormone it
produces regulates metabolism?
Thyroid gland- The function of the thyroid gland
is to take iodine, found in many foods, and convert
it into thyroid hormones: thyroxine (T4) and
triiodothyronine (T3). Every cell in the body
depends upon thyroid hormones for regulation of
their metabolism
69. What important function do your kidneys
perform to maintain homeostasis?
Filter you blood and maintain fluid levels in
bloodstream (blood pressure) and levels of salts,
ph level, nitrogen wastes, etc.
Sends excess fluids to bladder to rid from body
70. How does a vaccine provide you with
immunity?
Vaccines artificially produce acquired immunity
1. Vaccine- substance that contains antigen
of a pathogen
2. Causes immune system to produce
memory cells
3. You can make antibodies right away if
infected
71. Where does chemical digestion of food begin?
In your mouth
72. What type of pathogens do antibiotics work on
or not work on?
Bacteria or fungi, but NOT on viruses
73. What are your body’s non-specific defenses
against pathogens?
Inflammatory response- characterized by
swelling, redness, pain, itching, and increased
warmth at affected site
Reacts to every pathogen the same way
74. What are your body’s specific defenses
against pathogens?
Immune response is triggered when immune
system detects a pathogen (2 types of immune
response)
•Cell-mediated immunity- when lymphocytes
(not antibodies) themselves defend the body.
•Humoral Immunity- also called antibodymediated immunity
Antigens- protein markers on
surfaces of cells and viruses
that help immune system
identify a foreign cell or virus
75. What is an antibody?
Antibodies- proteins made by B-cells and destroy
pathogens
76. What is an antigen?
Antigens- protein markers on surfaces of cells
and viruses that help immune system identify a
foreign cell or virus
77. What are the three types of neurons?
(Diagram and label the correct pathway)
• Sensory neurons- detect stimuli and transmit
signals to brain and spinal cord
• Interneurons- make up brain and spinal cord
and receive and process information
• Motor neurons-pass messages from nervous
system to organs and muscles
78. What is a feedback loop and how is it similar
to a thermostat in your house?
It operates by doing the opposite (negative) of
what it senses. If senses it is to hot, it tries to cool
down, to cold, tries to warm up.
79. How are the nervous system and endocrine
system similar? Different?
Both regulate and control you body
Nervous system- fast acting and “hard wired”
Endocrine system- slower acting chemical
signals carried in your bloodstream throughout the
body. Control process that occur over long periods
of time (hair growth, aging, sleep patterns, etc.)
80. Why is a virus not considered a living thing?
It needs a host cell to reproduce (cannot
reproduce by itself)