Skeletal System
This is the longest bone in the human body.
Femur
This muscle helps you bend your arm at the elbow.
Biceps
This organ pumps blood through the body.
Heart
This organ controls the body and processes information.
Brain
This body part is where the digestion begins in the body.
Mouth
Adults have about this many bones in their bodies.
206
Largest and most superficial of the three bottom muscles?
Gluteus Maximus
These carry oxygen-rich blood away from the heart.
Arteries
This structure inside the brain controls thinking, memory, and voluntary movements.
Cerebrum
This organ produces acid to break down food.
Stomach
This part of the skeleton protects your brain.
Hint: Another name for Skull
Cranium
Muscles that you control voluntarily are called this.
Smooth muscles
This gas is removed from the body when you exhale.
Carbon Dioxide
These nerves carry messages from the brain and spinal cord to the rest of the body.
motor nerves
This structure moves food from the mouth to the stomach.
Esophagus
These two special vertebrae allow you to nod and rotate your head.
Axis and Atlas
This process occurs when muscle fibers shorten to produce movement.
Muscle Contraction
The dome-shaped muscle that contracts to allow the lungs to expand during inhalation.
Diaphragm
This part of the brain controls automatic functions like heartbeat, breathing, and digestion.
medulla oblongata
This organ helps digest fats by producing bile.
Liver
What are the two most important bones that make up your arm?
Ulna and Radius
This shoulder muscle raises the arm sideways away from the body.
Deltoid
This type of blood cell helps fight infections by attacking bacteria, viruses, and other foreign invaders in your body.
White Blood Cells
These nerves carry messages to only the body to the brain and spinal cord.
They detect things like:
Touch and pressure (skin)
Temperature (hot/cold)
Pain (injury or harmful stimuli)
Special senses like sight, hearing, taste, and smell
Sensory Nerves
Most nutrients are absorbed in this organ.
Small intestines