| A | B | 
|---|
| thigh bone | femur | 
| small bone in lower leg | fibula | 
| collar bone | clavicle | 
| shoulder blade | scapula | 
| skull | cranium | 
| wrist bone | carpal | 
| fingers and toes | phalanges | 
| bone in upper arm | humerus | 
| vertebrae of lower back | lumbar | 
| vertebrae of neck | cervical | 
| breast bone | sternum | 
| bone in forearm that aligns with the pinky finger | ulna | 
| located between the ankle bones and toes | metatarsals | 
| windpipe | trachea | 
| tubes that lead into the lungs | bronchi | 
| tubes that lead to the tiny air sacs in the lungs | bronchioles | 
| tiny air sacs located in the lungs | alveoli | 
| large blood vessel that brings deoxygenated blood back to heart from lower body | inferior vena cava | 
| section of heart where deoxygenated blood enters | right atrium | 
| pumps blood to lung | right ventricle | 
| blood vessel that carries blood TO the lungs | pulmonary artery | 
| blood vessel that brings blood back from the lungs to the heart | pulmonary vein | 
| pumps blood to the body | left ventricle | 
| blood vessel that carries oxygenated blood from heart TO the body | aorta | 
| tube that transports food to stomach | esophagus | 
| food is broken down and turned into liquid here | stomach | 
| site of nutrient absorption | small intestine | 
| water is absorbed here | large intestine | 
| produces bile | liver | 
| stores bile | gall bladder | 
| secretes a neutralizing substance into small intestine | pancreas | 
| where sperm is produced | seminiferous tubules | 
| mature sperm are stored here | epididymis | 
| tube that transports sperm to urethra | vas deferens | 
| tube that transports sperm out of the body | urethra | 
| houses eggs | ovary | 
| where fertilization occurs | fallopian tube | 
| chamber where embryo develops | uterus | 
| nerve cell | neuron | 
| dendrite | receives incoming messages | 
| axon | relays outgoing messages | 
| cell body | part of nerve cell that contains the nucleus | 
| central nervous system | brain and spinal chord | 
| peripheral nervous system | network of nerves that connect to the CNS |