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Human Body Systems Review Flashcards | StudBud
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Human Body Systems Review
Human Body Systems Review
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A review of our unit on human body- 7th grade
Flashcards
24 cards
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Practice quiz
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Questions
24
Answers
1
The smallest unit of a living things is called ....
a cell
an organ
an organism
a tissue
2
If you tear a tendon in your thumb, you would...
not be able to move it- muscle can't pull on the bone alone
not notice anything because tendons don't matter.
be able to move it- the muscle and bone are still OK.
have a floppy thumb- the bones wouldn't be held together
3
How does surface area relate to diffusion?
more surface area = faster diffusion
more surface area = slower diffusion
surface area doesn't relate to diffusion
what is surface area?
4
Which list of organs all use diffusion? (Hint: where are molecules moving through membranes?)
small intestine, lungs, kidneys
lungs, small intestine, heart
heart, small intestine, liver
lungs, heart, kidneys
5
A group of organs and tissues working together is called....
a tissue
an organ system
a cell
an organ
6
The main job of the nervous system is..
To receive, process, store, and send information
To deal with pathogens and bacteria
To make you scared, worried, or nervous
To move molecules and hormones around your body
7
You go running. Your heart rate and breathing increases. You're sweating. What is NOT involved?
excretory system
respiratory system
digestive system
circulatory system
8
The difference between arteries and veins is...
Arteries and veins are connected by capillaries.
Arteries carry blood with oxygen, and veins with no oxygen
Arteries are always larger than veins.
Arteries move away from the heart and veins return to heart
9
Someone with type O- blood type ....
is a universal blood donor
can receive blood from anyone of any blood type
can donate blood to anyone of any blood type
can only safely receive type O- blood.
10
The lungs are able to inhale and exhale because...
You suck air into your lungs and blow air out.
They are moved by a diaphragm muscle.
The lungs are muscles.
The alveoli are like sponges and soak up the air.
11
The excretory system releases urine. What is urine?
Urine is the same as your tears and sweat.
Urine is the drinks you had, after you digest them.
Urine is mostly water made by your cells during respiration
Urine is waste and water that kidneys remove from the blood.
12
If a membrane is semi-permeable it means....
only large trucks can diffuse through the membrane
everything can diffuse through the membrane
nothing can diffuse through the membrane
only certain things can diffuse through the membrane
13
The system that excretes waste and maintains homeostasis is
integumentary system
excretory system
digestive system
respiratory system
14
What does cellular respiration do?
Uses sugars and oxygen to make energy for cells
Uses sugars and carbon dioxide to make energy for cells
Is the same as photosynthesis in plants
It is just the scientific term for "breathing"
15
Homeostasis means
keeping conditions in the body constant and stable
using a homeopathic remedy to help stay healthy
regulating temperature, water levels, etc around your cells
maintaining a stable internal environment
16
A neuron is an example of...
a cell
an organ
a tissue
an organism
17
The system that transports gasses, nutrients, wastes, hormones, etc, through the body is...
The digestive system
The circulatory system
The nervous system
The respiratory system
18
An organism is....
a complete living thing
a group of cells working together
a group of organs working together
the smallest unit of life
19
A group of cells working together is called...
an organ system
a tissue
an organ
a cell
20
What tissues increase the surface area of your organs for diffusion?
teeth (mouth), diaphragm (lungs), and veins (heart)
spleen, mucus, and gall bladder
villi (intestines), alveoli (lungs) and nephrons(kidneys)
kleenex, tissue paper, and wipes
21
Enzymes help the digestive system by...
Activating the stomach acid
reducing starch, fats, and proteins to their simplest parts
Keeping you from digesting your own cells
breaking apart the bonds within large food molecules
22
What is diffusion?
the opposite of fusion
when molecules clump together
special cells sucking up nutrients
molecules spreading out (and through membranes)
23
The system that mechanically and chemically breaks down food into simple nutrients is...
digestive system
nervous system
muscular system
skeletal system
24
Skeletal muscles come in opposing pairs because...
Two working together is stronger than one
You tend to have two of each skeletal part (like, two arms)
muscles can only pull- each muscle needs an opposite partner
If you tear or break one, the other can take over the job
