Muscular System
A period of inactivity that allows for recovery and growth.
Rest
There are _______ muscles in the human body, and each one has a specific function.
Over 600
The framework of bones and joints that supports and protects the human body.
Skeletal System
A vitamin that helps the body absorb calcium, important for bone health.
Vitamin D
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
Evolution
A nutrient found in food that is necessary for the growth and repair of tissues.
Protein
Which is not one of the three main types of muscles: skeletal, smooth, nerve, or cardiac
Nerve
A structure in the human body where two parts of the skeleton are fitted together.
Joint
Any movement that works your body's muscles and requires more energy than resting.
Physical Activity
The process where organisms better adapted to their environment tend to survive and produce more offspring.
Natural Selection
A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.
Tendon
If a muscle contracts 5 times in 2 seconds, what is the frequency of contractions per second?
2 1/2
The bone in the thigh, which is the longest bone in the human body.
Femur
True or False: The skeletal system helps supports our body, protects our vital organs, and helps us move.
True
A change or the process of change by which an organism or species becomes better suited to its environment.
Adaptation
Muscles found in organs that are not under voluntary control.
Smooth Muscle
Being able to move without any internal or external help.
Voluntary
A mineral found in many foods, essential for healthy bones.
Calcium
Bones are made of a mix of flexible fibers and _____ minerals.
Natural selection is the way some birds, like finches, have different types of beaks. Finches with beaks that are good at cracking seeds will survive better in areas where seeds are the main food. This is an example of who's theory?
Muscles attached to bones that help the body move.
Skeletal Muscle
A muscle that has no ability to move on its own.
Involuntary
Small bones forming the backbone, protecting the spinal cord.
Vertebrae
Your shoulder has a specific type of joint in it. What is it called?
Ball and Socket Joint
Which statement is not true:
a) Physical adaptations involve changes to a living thing's body.
b) Behavioral adaptations involve the way animals act.
c) Mental adaptations involve the way an animal perceives predator and prey.
c) Mental adaptations involve the way an animal perceives predator and prey.