This body system serves as your first line of defense against germs and injury.
What is the integumentary system?
These organs filter blood and produce urine.
What are the kidneys?
Adults normally have this many bones.
What is 206?
This organ controls the body's activities and thoughts.
What is the brain?
This type of muscle is attached to bones and is under voluntary control.
What is skeletal muscle?
These tiny openings on the skin's surface allow sweat to reach the outside of the body.
What are pores?
This tiny kidney structure performs filtration.
What is the nephron?
These cells build up new bone tissue.
What are osteoblasts?
These cells carry electrical signals throughout the body.
What are neurons?
This muscle separates the chest from the abdomen and helps you breathe.
What is the diaphragm?
This type of gland releases an oily substance that helps keep skin and hair from drying out.
What are sebaceous glands?
This tube carries urine from the bladder.
What is the urethra?
This tissue covers the ends of bones inside joints.
What is cartilage?
This fatty covering speeds up nerve impulses.
What is the myelin sheath?
This type of muscle is found only in the heart.
What is cardiac muscle?
When your body gets too cold, your body conserves heat by....capillaries.
What is narrowing (vasoconstriction)?
This waste product is produced from the breakdown of proteins.
What is urea?
This mineral makes bones hard and strong.
What is calcium?
Touching a hot stove causes this rapid automatic response.
What is a reflex?
This type of muscle works automatically to move food through the digestive system.
What is smooth muscle?
This layer beneath the skin stores fat, cushions organs, and helps insulate the body.
What is the hypodermis (subcutaneous layer)?
Damage to this filtering structure may cause proteins to appear in the urine.
What is the glomerulus?
This tough connective tissue connects bones to other bones and helps stabilize joints.
What are ligaments?
This part of the brain controls balance, coordination, and fine muscle movements.
What is the cerebellum?
This protein provides the energy molecule needed for muscle contraction.
What is ATP?