PLTW: HBS EOC EXAM REVIEW
QUESTIONS AND ANSWERS | 2026
UPDATE | 100% CORRECT.
What is the function of the urinary system? - ANS To filter blood, remove waste in the form of
urine
What are the four organs involved in the urinary system? - ANS Kidneys, ureters, bladder,
urethra
What is the function of the kidney? - ANS To filter blood and create urea
What are ureters? - ANS Tubes that transfer the urea from the kidney to the bladder
What is the bladder? - ANS Holds the urine until it can be removed
What is the urethra? - ANS Transports the urine out of the body
What is the function of the nervous system? - ANS Information collection and response,
control of basic body functions
What organs/structures are involved in the nervous system? - ANS Brain, spinal cord,
peripheral nerves, sensory organs
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,What are peripheral nerves? - ANS Nerves that carry signals to and from limbs
What is the function of the immune system? - ANS Prevents and eliminates infections
What are the organs of the immune system? - ANS Thymus, tonsils, appendix, spleen, lymph
nodes, skin
What is the thymus? - ANS Promotes production of WBCs
What are the tonsils? - ANS Trap pathogens as they enter the body
What is the appendix? - ANS Stores good bacteria
What is the spleen? - ANS Filters blood
What are the lymph nodes? - ANS Filter lymph fluid
What is the function of the digestive system? - ANS To break down food into nutrients to fuel
the body
What are the organs of the digestive system? - ANS Teeth/tongue, pharynx, esophagus,
stomach, small intestine, large intestine, rectum, anus, gall bladder, liver
What is the pharynx? - ANS Connects the mouth to the esophagus
What is the rectum? - ANS The final section of the large intestine
What is the anus? - ANS Part of the body from which stool is released
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 18
, What is the gall bladder? - ANS Small membranous sac that stores bile and releases it into
the large intestine
What is the liver? - ANS Makes bile for the small intestine
What is the function of the respiratory system? - ANS Takes in oxygen for cells and removes
cellular CO2 waste.
What are the organs of the respiratory system? - ANS Nasal cavity, pharynx, larynx, trachea,
epiglottis, bronchi,, alveoli
What is the function of the cardiovascular system? - ANS Moves blood throughout the body
What organs/structures make up the cardiovascular system? - ANS Atria, ventricles, arteries,
arterioles, veins, venules, capillaries
What is the function of the endocrine system? - ANS Responsible for secretion of hormones
anterior - ANS front
ventral - ANS front (belly)
posterior - ANS back
dorsal - ANS back
superior - ANS higher, above
inferior - ANS lower, below
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 18
QUESTIONS AND ANSWERS | 2026
UPDATE | 100% CORRECT.
What is the function of the urinary system? - ANS To filter blood, remove waste in the form of
urine
What are the four organs involved in the urinary system? - ANS Kidneys, ureters, bladder,
urethra
What is the function of the kidney? - ANS To filter blood and create urea
What are ureters? - ANS Tubes that transfer the urea from the kidney to the bladder
What is the bladder? - ANS Holds the urine until it can be removed
What is the urethra? - ANS Transports the urine out of the body
What is the function of the nervous system? - ANS Information collection and response,
control of basic body functions
What organs/structures are involved in the nervous system? - ANS Brain, spinal cord,
peripheral nerves, sensory organs
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 18
,What are peripheral nerves? - ANS Nerves that carry signals to and from limbs
What is the function of the immune system? - ANS Prevents and eliminates infections
What are the organs of the immune system? - ANS Thymus, tonsils, appendix, spleen, lymph
nodes, skin
What is the thymus? - ANS Promotes production of WBCs
What are the tonsils? - ANS Trap pathogens as they enter the body
What is the appendix? - ANS Stores good bacteria
What is the spleen? - ANS Filters blood
What are the lymph nodes? - ANS Filter lymph fluid
What is the function of the digestive system? - ANS To break down food into nutrients to fuel
the body
What are the organs of the digestive system? - ANS Teeth/tongue, pharynx, esophagus,
stomach, small intestine, large intestine, rectum, anus, gall bladder, liver
What is the pharynx? - ANS Connects the mouth to the esophagus
What is the rectum? - ANS The final section of the large intestine
What is the anus? - ANS Part of the body from which stool is released
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 18
, What is the gall bladder? - ANS Small membranous sac that stores bile and releases it into
the large intestine
What is the liver? - ANS Makes bile for the small intestine
What is the function of the respiratory system? - ANS Takes in oxygen for cells and removes
cellular CO2 waste.
What are the organs of the respiratory system? - ANS Nasal cavity, pharynx, larynx, trachea,
epiglottis, bronchi,, alveoli
What is the function of the cardiovascular system? - ANS Moves blood throughout the body
What organs/structures make up the cardiovascular system? - ANS Atria, ventricles, arteries,
arterioles, veins, venules, capillaries
What is the function of the endocrine system? - ANS Responsible for secretion of hormones
anterior - ANS front
ventral - ANS front (belly)
posterior - ANS back
dorsal - ANS back
superior - ANS higher, above
inferior - ANS lower, below
@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 18
