What is a mass of cells that perform a specific function for the body?
tissue
this organ pumps blood through the body
heart
A group of organs that works together to perform the same functions is an ____________
organ system
Marcus rarely goes outside and spends most of his time indoors. His doctor tells him he has low levels of vitamin D. What might this cause?
A. Decreased lung capacity
B. Weaker bones and teeth
C. Increased muscle mass
D. Improved vision
B. Weaker bones and teeth
What part of your body never stops growing throughout your life?
ears and nose
Muscle tissue makes the heart pump_______.
blood
breaks down food into small particles
stomach
The human skeleton contains _____ bones.
206
Devin is training for a marathon but rarely drinks water. What could happen if he continues this habit?
A. He could develop stronger muscles
B. He could become dehydrated
C. His blood pressure could increase permanently
D. His bones could weaken
B. He could become dehydrated
What is the largest organ in the human body?
the skin
The three types of muscle tissues are ____________
skeletal, smooth, and cardiac
oxygenates blood
lungs
The respiratory system takes in _______ and expels ______________
oxygen and carbon dioxide
Ava stays up late every night and only sleeps about four hours. What could this habit cause?
A. Improved memory
B. Reduced stress levels
C. Lowered immune function and poor focus
D. Faster metabolism
C. Lowered immune function and poor focus
Where is the smallest bone in your body located?
in your ear (stapes)
This type of tissue allows the brain to respond to stimuli
nervous tissue
Bronchitis is a condition that’s characterized by coughing and the secretion of mucus. A person with bronchitis has inflamed airways, which makes it hard to breathe. Where does a bronchitis infection start?
lungs
Mark has diabetes and needs to undergo dialysis twice a week. Dialysis purifies the blood by removing waste and excess water from the blood. Which body system does dialysis perform a function for?
excretory
In a healthy body, the heart pumps blood efficiently. When the heart has a problem, heart failure can occur. Heart failure can happen on one side of the heart or on both sides. What would happen if a person had right-sided heart failure?
A. The heart would fail to receive oxygenated blood from the lungs.
B. The heart would fail to efficiently pump oxygenated blood to the body.
C. The heart would fail to efficiently pump blood to the lungs.
D. The heart wouldn’t be able to pump blood to or receive blood from the lungs or the body.
C. The heart would fail to efficiently pump blood to the lungs.
How long are your intestines in feet?
about 30 feet
Peptic ulcers are sores in the lining of the stomach that are caused by a bacterial infection. These bacteria increase the acid in the stomach and eat away at the stomach lining, which causes sores. When this occurs, which type of tissue does the acid remove?
epithelial
What are the organs that a person can live without?
appendix, spleen, gallbladder, and tonsils
Celiac disease is a condition that prevents people from eating food products that contain gluten. Gluten is a protein compound found in some foods, such as wheat products. For people with celiac disease, a protein in gluten interferes with the absorption of various nutrients, minerals, and vitamins. Which body system is responsible for breaking down gluten?
digestive
Lisa’s doctor tells her that she needs to eat more foods that contain calcium to maintain her bone health. What could happen if Lisa doesn’t follow her doctor’s orders?
B. She can have a higher risk of skeletal fractures
True or False: You use only 10% of your brain.
False, you use nearly all parts of your brain, just not at once