The outermost layer of the skin, providing protection against environmental factors and regulating water loss.
Epidermis
Blood cells responsible for carrying oxygen from the lungs to the body's tissues and carbon dioxide from the tissues to the lungs.
Red Blood Cells
The largest part of the brain, responsible for higher cognitive functions such as thinking, memory, and voluntary movements.
Cerebrum
The body system responsible for filtering waste products from the blood and producing urine, consisting of the kidneys, ureters, bladder, and urethra.
Urinary System
The body system responsible for transporting blood, nutrients, oxygen, and waste products throughout the body, consisting of the heart, blood vessels, and blood.
Circulatory System
Blood vessels that carry deoxygenated blood from the body's tissues back to the heart.
Veins
The muscular organ located in the pelvis, responsible for housing and nourishing a developing fetus during pregnancy.
Uterus
Clusters of cells in the pancreas responsible for producing hormones such as insulin and glucagon that regulate blood sugar levels.
Pancreatic Islets
The body system composed of the brain, spinal cord, and nerves, responsible for transmitting signals between different parts of the body and controlling voluntary and involuntary actions.
Nervous System
Specialized cells of the nervous system that transmit electrical signals, consisting of a cell body, dendrites, and an axon.
Neuron
The middle layer of the skin, containing blood vessels, nerves, hair follicles, and sweat glands.
Dermis
The body system consisting of the skin, hair, nails, and associated glands, responsible for protection, regulation of body temperature, and sensation.
Integumentary System
A small gland located at the base of the brain, responsible for regulating growth, metabolism, and various other physiological processes by secreting hormones.
Pituitary Gland
Blood vessels that carry oxygenated blood away from the heart to the body's tissues.
Arteries
Pair of tubes connecting the ovaries to the uterus, allowing eggs to travel from the ovaries to the uterus and providing the site for fertilization.
Fallopian Tubes
A lymphoid organ located in the upper chest, responsible for the maturation and activation of certain immune cells.
Thymus
The long, tubular structure of nervous tissue extending from the brainstem through the vertebral canal, serving as a pathway for nerve signals between the brain and the rest of the body.
Spinal Cord
Glands located in the dermis that produce sweat, helping regulate body temperature and excrete waste products.
Sweat Glands
Tubes connecting the kidneys to the bladder, allowing urine to flow from the kidneys to the bladder.
Ureters
Male reproductive organs responsible for producing sperm and testosterone.
Testes
Structures within the dermis that produce hair, which serves various functions such as protection and sensory perception.
Hair Follicles
The body framework consisting of bones and cartilage, providing support and protection for the body and facilitating movement.
Skeletal System
The part of the digestive tract where most nutrient absorption occurs, consisting of the duodenum, jejunum, and ileum.
Small Intestine
The tube connecting the bladder to the outside of the body, allowing urine to be eliminated from the body.
Urethra
A butterfly-shaped gland located in the neck, responsible for producing hormones that regulate metabolism, growth, and development.
Thyroid Gland
The muscular organ of the circulatory system responsible for pumping blood throughout the body.
Heart
Responsible for the body's immune response, including the production of antibodies and the destruction of pathogens.
White blood cells
Muscles under conscious control, responsible for intentional movements.
Voluntary Muscles
Coiled tube located on the back of each testicle, responsible for storing and maturing sperm.
Epididymis
A glandular organ located behind the stomach, responsible for producing digestive enzymes and hormones such as insulin.
Pancreas
Chemical messengers produced by the endocrine glands that regulate various physiological processes in the body.
Hormones
The body system responsible for the breakdown of food into nutrients that can be absorbed by the body, consisting of the mouth, esophagus, stomach, intestines, and associated organs.
Digestive System
Small, bean-shaped organs of the lymphatic system that filter lymph and contain immune cells that help fight infection.
Lymph Nodes
The body system responsible for the exchange of oxygen and carbon dioxide between the body and the environment, consisting of the lungs, airways, and respiratory muscles.
Respiratory System
Glands located in the dermis that secrete sebum, an oily substance that lubricates and waterproofs the skin and hair.
Sebaceous Glands
Tube connecting the epididymis to the urethra, allowing sperm to be transported from the testes to the urethra.
Vas Deferens
A muscular sac located in the pelvis, responsible for storing urine before it is eliminated from the body.
Bladder
Pair of glands located on top of each kidney, responsible for producing hormones such as cortisol and adrenaline that regulate stress response and metabolism.
Adrenal Glands
The main organs of the respiratory system responsible for gas exchange between the air and the blood.
Lungs
Pair of organs located in the abdomen, responsible for filtering waste products from the blood, regulating fluid and electrolyte balance, and producing urine.
Kidneys
The final part of the digestive tract, responsible for absorbing water and electrolytes and forming and eliminating feces.
Large Intestine
Tiny blood vessels that connect arteries and veins, facilitating the exchange of nutrients, gases, and waste products between the blood and the tissues.
Capillaries
The lower part of the brain connecting the brain to the spinal cord, responsible for controlling basic life functions such as breathing and heart rate.
Brainstem
The tube connecting the larynx to the bronchi, allowing air to pass between the throat and the lungs.
Trachea
The largest internal organ, responsible for detoxification, metabolism, and the production of bile.
Liver
Small masses of lymphoid tissue located at the back of the throat, responsible for trapping and removing pathogens entering the body through the mouth and nose.
Tonsils
The body system responsible for maintaining fluid balance, supporting the immune response, and transporting fats, consisting of lymphatic vessels, lymph nodes, and lymphoid organs.
Lymphatic System
Muscles not under conscious control, responsible for involuntary actions such as digestion and heartbeat.
Involuntary Muscles
The muscular tube connecting the throat to the stomach, allowing food and liquids to pass from the mouth to the stomach.
Esophagus
The muscular tube connecting the uterus to the outside of the body, serving as the birth canal during childbirth and the site for sexual intercourse.
Vagina
The body system responsible for reproduction and the production of offspring, consisting of male and female reproductive organs.
Reproductive System
The organ of the digestive system responsible for breaking down food into smaller particles and mixing it with gastric juices.
Stomach
Female reproductive organs responsible for producing eggs and female sex hormones such as estrogen and progesterone.
Ovaries
The body system composed of glands that produce and secrete hormones, chemical messengers that regulate various physiological processes in the body.
Endocrine System
Your experience on this site will be improved by allowing cookies.