Skeletal/Muscular
What mineral is stored in bones and is crucial for strong teeth
Calcium
What part of the brain controls balance
Cerebellum
What is the protein in red blood cells that binds oxygen
Hemoglobin
What is the organ that produces bile
Liver
What is the outermost layer of the skin
Epidermis
What is the largest bone in the body
Femur
What hormone triggers the "fight or flight" response
Adrenaline (epinephrine)
What lymphatic organ located in the upper left abdomen filters and stores white blood cells
Spleen
What are the microscopic air sacs in the lungs where gas exchange occurs
Alveoli
What structure in the testes is where sperm mature and are stored
Epididymis
What type of muscle can you control voluntarily
Skeletal muscle
What is the protective covering around axons called
Myelin Sheath
What is the pacemaker of the heart, located in the right atrium
Sinoatrial (SA) node
What is the tube that carries urine from the kidney to the bladder
Ureter
What is the hormone that triggers ovulation in females
Luteinizing Hormone (LH)
What is the movable bone in the lower jaw
The Mandible
What part of the brainstem controls breathing and heart rate
Medulla Oblongata
What double-layered membrane surrounds and protects the heart
Pericardium
What is the muscular valve controlling the passage of food from the stomach to the small intestine
Pyloric Sphincter
What smooth muscle in the skin causes hair to stand up when cold or frightened
Arrector Pili Muscle
What specialized cells break down bone tissue
Osteoclasts
What ion's rapid movement into a neuron causes depolarization during an action potential
Sodium (Na+)
What lymphatic pathway carries lymph into a lymph node
Afferent lymphatic vessel
What is the process by which water and nutrients move from the renal tubule back into the blood
Tubular Reabsorption
What type of sweat gland, found mainly in the armpits and groin, secretes a thicker fluid that produces body odor when broken down by bacteria
Apocrine Glands