Skeletal System
What is the main function of the skeletal system?
To provide support and structure to the body.
What is the primary function of the muscular system?
To enable movement of the body.
What is the main function of the respiratory system?
To take in oxygen and expel carbon dioxide.
What is the primary function of the circulatory system?
To transport blood, oxygen, and nutrients throughout the body.
What is the primary function of the digestive system?
To break down food and absorb nutrients.
How many bones are there in the adult human body?
206
Which muscles are under our voluntary control?
Skeletal muscles.
Which organ is the primary site of gas exchange in the respiratory system?
The lungs.
What is the largest artery in the human body?
The aorta.
What is the long, tube-like organ where most digestion and nutrient absorption occur?
The small intestine.
What is the strongest bone in the human body?
The femur (thigh bone).
What are muscles made of that contract and relax to cause movement?
Muscle fibers.
What is the dome-shaped muscle that helps us breathe called?
The diaphragm.
What are the four chambers of the heart called?
Left atrium, left ventricle, right atrium, and right ventricle.
What organ produces bile to aid in digestion?
The liver.
What are the three types of muscles found in the human body?
Skeletal muscles, smooth muscles, and cardiac muscles.
What causes muscles to feel sore after a strenuous workout?
The buildup of lactic acid in the muscles.
What are the tiny hair-like structures in the respiratory system that help trap dust and particles?
Cilia.
What are the tiny blood vessels that connect arteries and veins?
Capillaries.
What is the term for the process of chewing food?
Mastication.
What is the purpose of joints in the skeletal system?
Joints allow bones to move and provide flexibility.
What is the largest muscle in the human body?
The gluteus maximus (buttock muscle).
How do we refer to the process of breathing in and out?
Inhalation and exhalation.
What is the liquid component of blood called?
Plasma.
What is the muscular organ that churns and mixes food with digestive juices?
The stomach.