Cardiovascular
What is the main function of the heart?
To pump blood throughout the body.
What is the longest bone in the human body?
The femur.
What muscle helps expand the lungs for breathing?
The Diaphragm
What is the muscle in your upper arm responsible for flexing the elbow?
The Bicep Brachii
Which energy system provides quick bursts of energy without oxygen?
The Anaerobic system.
What blood vessels carry blood away from the heart?
Arteries
How many bones does an adult human skeleton typically have?
206 Bones
What is the main function of the respiratory system?
To exchange oxygen and carbon dioxide.
Name the three types of muscle tissue.
Skeletal, cardiac, and smooth muscle
What molecule is the primary energy carrier in cells?
ATP (Adenosine triphosphate)
What is the largest artery in the body?
The Aorta
What type of joint is found in the shoulder?
Ball and Socket
Name the two main branches that lead from the trachea into the lungs.
Bronchus
Which muscle group is primarily responsible for extending the knee?
The Quadriceps.
Which energy system is primarily used during endurance activities?
The Aerobic System
What is the role of red blood cells?
To transport oxygen to body tissue
Which bone protects the brain?
What is the tiny air sacs in the lungs where gas exchange occurs called?
Alveoli
Which large muscle group is located in the back and is responsible for movements like pulling and lifting?
The latissimus dorsi
What is the byproduct of anaerobic respiration?
Lactic Acid
What is the term for the two upper chambers of the heart?
Atriums
What mineral is primarily responsible for bone strength?
Calcium
What is the process by which oxygen is transported from the lungs to the blood and carbon dioxide is transported from the blood to the lungs?
Gas Exchange
Which type of muscle fiber is best for endurance activities?
Slow-twitch fibers.
How long can the ATP-PC system typically sustain activity?
10-15 seconds.