Life Science Chapter 13 Test Flashcards
How are humans different from other organisms?
Humans are created in the image of God, have a soul, and a conscience.
What are the 4 different types of tissues and what are their functions?
Nerve Tissue: receives and transmits electrical impulses. Connective Tissue: supports, connects, and protects other body structures. Muscle Tissue: contracts to move the body or substances. Epithelial Tissue: lines external and internal surfaces.
What are the 3 layers of skin? Describe each one.
Epidermis: outer layer made of epithelial tissue. Dermis: second layer, thicker, contains connective tissue, blood vessels, nerves, follicles, and sweat glands. Subcutaneous: below dermis, made of fat cells and fibers.
The pigment that is responsible for much of the color of human skin is?
Melanin.
When did different ethnic groups likely develop?
At the Tower of Babel.
What are the two different types of joints?
Movable and immovable.
Which type of joint is your elbow?
Movable.
What are ligaments?
Bands of connective tissue that hold most bones and joints together.
What are tendons?
Bands of connective tissue that attach bones and muscles.
What are the different types of muscle? Describe each one.
Voluntary muscles: arms, legs, face, hands, feet. Skeletal muscles: around the bones. Involuntary muscles: in stomach, chest, brain. Cardiac muscles: heart. Striated: around the skeleton. Smooth: in organs.
Biceps and triceps are examples of which type of muscle?
Voluntary striated.
What happens to your biceps when your triceps contract?
When the bicep contracts, the tricep muscle relaxes.
Which type of tissue is used to move substances throughout your body?
Muscular tissue.
What are tissues?
A group of similar cells that work together.
What are organs?
A group of tissues that work together.
What is the subcutaneous layer made up of?
Fat cells and fibers.
How do voluntary muscles move the body?
You can control them to walk, play, chew, drink, etc.
Do skeletal muscles work in pairs?
Yes.
What is the difference between voluntary muscles and involuntary muscles?
Voluntary muscles can be controlled; involuntary muscles cannot.
What is the striated, involuntary muscle in the heart called?
Cardiac muscle.
When do muscles begin lactic acid fermentation?
When they don’t have enough oxygen.
What are all of the functions of the skeletal system?
To protect organs, support and movement, mineral storage, blood cell production.
Explain how skin regulates body temperature.
When hot, more blood flows to sweat glands to release sweat. When cold, less blood flows, causing muscles to contract and create goosebumps.
