1|Page
BIOL251 FINAL EXAM WITH 100%
CORRECT ANSWERS 2025/2026
anatomy correct answers >> study of structure
physiology correct answers >> study of how body parts
function
level of structural organization correct answers >> chemical,
cellular, tissue, organ, organ system, organismal
11 systems of the human body correct answers >>
integumentary, skeletal, muscular, nervous, endocrine,
cardiovascular, lymphatic, respiratory, digestive, urinary,
reproductive
integumentary components correct answers >> skin, hair,
nails
integumentary functions correct answers >> protection,
body temperature regulation, insulation
skeletal components correct answers >> bones, joints,
cartilage
skeletal functions correct answers >> structure, support,
body movements
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muscular components correct answers >> skeletal muscle
tissue
muscular functions correct answers >> movements,
produces heat, maintains posture
nervous components correct answers >> brain, spinal cord,
nerves, sensory organs (eyes and ears)
nervous functions correct answers >> action potentials,
regulates body activities, detects changes in internal and external
endocrine components correct answers >> hormone
producing glands (pineal gland, hypothalamus, pituary gland,
ovaries, etc.)
endocrine functions correct answers >> releasing hormones
(chemical messengers)
cardiovascular components correct answers >> blood, heart,
blood vessels
cardiovascular functions correct answers >> pumping blood,
helps regulate temperature and water content of body fluids
lymphatic components correct answers >> lymphatic fluid,
vessels, spleen, thymus, lymph nodes, and tonsils
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lymphatic functions correct answers >> returns proteins and
fluids to the blood, carries lipids
respiratory components correct answers >> lungs, trachea,
bronchial tubes, pharynx, and larynx
respiratory functions correct answers >> transfers oxygen
from inhaled air to blood and carbon dioxide from blood to
exhaled air
digestive components correct answers >> mouth, pharynx,
esophagus, stomach, intestines, liver, pancreas, anus
digestive functions correct answers >> achieves physical and
chemical breakdown of food, absorbs nutrients
urinary components correct answers >> kidneys, ureters,
bladder, urethra
urinary functions correct answers >> produces, stores, and
eliminates urine
reproductive components correct answers >> gonads,
uterine tubes, mammary glands, etc.
reproductive functions correct answers >> gonads produce
gametes to help form a new organism, mammary glands produce
milk, etc.
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life processes in humans correct answers >> metabolism,
responsiveness, movement, growth, differentiation, reproduction
homeostasis correct answers >> a condition of equilibrium,
or balance, in the body's internal environment
fluid in homeostasis correct answers >> extracellular fluid
components of a feedback loop correct answers >> stimulus,
receptor, control center, effector, response
negative feedback loop correct answers >> a feedback loop
that causes a system to change in the opposite direction from
which it is moving (example: change in blood pressure)
positive feedback loop correct answers >> a feedback loop in
which change in a system is amplified (example: pregnancy)
tissue correct answers >> a group of cells that usually have a
common embryonic origin in an embryo and function together to
carry out specialized activities
4 basic types of tissue correct answers >> epithelial,
connective, muscle, nervous
cell junctions correct answers >> cells that are held together
in a variety of ways; point of contact between cells
BIOL251 FINAL EXAM WITH 100%
CORRECT ANSWERS 2025/2026
anatomy correct answers >> study of structure
physiology correct answers >> study of how body parts
function
level of structural organization correct answers >> chemical,
cellular, tissue, organ, organ system, organismal
11 systems of the human body correct answers >>
integumentary, skeletal, muscular, nervous, endocrine,
cardiovascular, lymphatic, respiratory, digestive, urinary,
reproductive
integumentary components correct answers >> skin, hair,
nails
integumentary functions correct answers >> protection,
body temperature regulation, insulation
skeletal components correct answers >> bones, joints,
cartilage
skeletal functions correct answers >> structure, support,
body movements
,2|Page
muscular components correct answers >> skeletal muscle
tissue
muscular functions correct answers >> movements,
produces heat, maintains posture
nervous components correct answers >> brain, spinal cord,
nerves, sensory organs (eyes and ears)
nervous functions correct answers >> action potentials,
regulates body activities, detects changes in internal and external
endocrine components correct answers >> hormone
producing glands (pineal gland, hypothalamus, pituary gland,
ovaries, etc.)
endocrine functions correct answers >> releasing hormones
(chemical messengers)
cardiovascular components correct answers >> blood, heart,
blood vessels
cardiovascular functions correct answers >> pumping blood,
helps regulate temperature and water content of body fluids
lymphatic components correct answers >> lymphatic fluid,
vessels, spleen, thymus, lymph nodes, and tonsils
,3|Page
lymphatic functions correct answers >> returns proteins and
fluids to the blood, carries lipids
respiratory components correct answers >> lungs, trachea,
bronchial tubes, pharynx, and larynx
respiratory functions correct answers >> transfers oxygen
from inhaled air to blood and carbon dioxide from blood to
exhaled air
digestive components correct answers >> mouth, pharynx,
esophagus, stomach, intestines, liver, pancreas, anus
digestive functions correct answers >> achieves physical and
chemical breakdown of food, absorbs nutrients
urinary components correct answers >> kidneys, ureters,
bladder, urethra
urinary functions correct answers >> produces, stores, and
eliminates urine
reproductive components correct answers >> gonads,
uterine tubes, mammary glands, etc.
reproductive functions correct answers >> gonads produce
gametes to help form a new organism, mammary glands produce
milk, etc.
, 4|Page
life processes in humans correct answers >> metabolism,
responsiveness, movement, growth, differentiation, reproduction
homeostasis correct answers >> a condition of equilibrium,
or balance, in the body's internal environment
fluid in homeostasis correct answers >> extracellular fluid
components of a feedback loop correct answers >> stimulus,
receptor, control center, effector, response
negative feedback loop correct answers >> a feedback loop
that causes a system to change in the opposite direction from
which it is moving (example: change in blood pressure)
positive feedback loop correct answers >> a feedback loop in
which change in a system is amplified (example: pregnancy)
tissue correct answers >> a group of cells that usually have a
common embryonic origin in an embryo and function together to
carry out specialized activities
4 basic types of tissue correct answers >> epithelial,
connective, muscle, nervous
cell junctions correct answers >> cells that are held together
in a variety of ways; point of contact between cells
