1. Which system moves the body?
digestive
muscular
endocrine
integumentary
2. When the left ventricle contracts, blood flows to the _____.
right atrium
lungs
aorta
left atrium
3. Ligaments are strips of tough tissue that _____.
support soft tissues inside bones
connect bones to bones
prevent friction between bones
attach muscles to bones
4. Which disease causes mucus to build up in the lungs and clog the airways?
cystic fibrosis
sleep apnea
bronchitis
asthma
5. What is not a function of the skeletal system?
protecting organs
making vitamins
providing movement
storing minerals
6. Which system gets rid of waste?
nervous
muscular
endocrine
excretory
7. What is the function of heart valves?
They force blood to flow out of the heart.
They return blood to the heart.
They regulate the heart rhythm.
They prevent blood from flowing backwards.
8. Which type of muscle causes voluntary movement?
smooth
skeletal
cardiac
9. Which event occurs in the large intestine?
Starch is digested.
Bile is released.
Water is recovered.
Chyme is absorbed.
10. The _____ system includes the lungs.
circulatory
immune
respiratory
endocrine
11. What can result if calcium is not replaced in bone tissue?
heart disease
diabetes
osteoporosis
bone cancer
12. Which structures bring oxygen from the trachea to the lungs?
capillaries
bronchioles
alveoli
bronchi
13. Which statement about epithelium is correct?
It warms and humidifies inhaled air.
It traps dust, pollen, and other particles.
It closes the windpipe when swallowing.
It is thin tissue that lines the alveoli.
14. Which event signals the brain to breathe?
increased blood levels of oxygen
relaxing of the diaphragm
contraction of the diaphragm
increased blood levels of carbon dioxide
15. Fibrinogen is a protein produced in platelets that _____.
prevents hemophilia
carries oxygen
creates blood clots
fights infections
16. Which is the largest artery in the body?
superior vena cava
aorta
atrium
inferior vena cava
17. Which structure prevents food and liquids from being inhaled when a person swallows?
the larynx
the glottis
the epithelium
the epiglottis
18. The liquid food in the digestive tract that is partially digested is called _____.
chyme
salivary amylase
bile
stomach acid
19. Where is glycogen stored?
pancreas
liver
gallbladder
stomach
20. Which system supports the body and protects organs?
integumentary
digestive
skeletal
muscular
21. Food moves from the mouth to the stomach through which organ?
pancreas
pharynx
esophagus
gallbladder
22. Perspiration leaves the body through the _____.
nephrons
collecting ducts
sweat glands
kidneys
23. What is the liquid part of blood called?
thrombus
platelet
fibrinogen
plasma
24. What covers the ends of bones in adults?
marrow
ligaments
cartilage
blood
25. Which organs are involved in elimination?
large intestine, liver, and blood
large intestine, rectum, and anus
small intestine, stomach, and liver
small intestine, villi, and rectum