Body Systems PDF

# Body Systems ## Nervous System - **Structures**: Brain, Spinal cord, Nerves - **Functions**: Recognizes and coordinates the body's response to changes in its internal and external environments ## Integumentary System - **Structures**: Skin, Hair, Nails, Sweat and oil glands - **Functions**: Gu...

# Body Systems ## Nervous System - **Structures**: Brain, Spinal cord, Nerves - **Functions**: Recognizes and coordinates the body's response to changes in its internal and external environments ## Integumentary System - **Structures**: Skin, Hair, Nails, Sweat and oil glands - **Functions**: Guards against infection and injury and ultraviolet radiation from the sun; helps to regulate body temperature ## Immune/Lymphatic System - **Structures**: White blood cells, Thymus, Spleen, Lymph nodes, Lymph vessels - **Functions**: Helps protect the body from disease; collects fluid lost from blood vessels and returns it to the circulatory system ## Muscular System - **Structures**: Skeletal muscle, Smooth muscle, Cardiac muscle - **Functions**: Works with skeletal system to produce voluntary movement; helps to circulate blood and move food through the digestive system ## Circulatory System - **Structures**: Heart, Blood vessels, Blood - **Functions**: Transports oxygen, nutrients, and hormones to cells; fights infection; removes cell wastes; helps to regulate body temperature ## Skeletal System - **Structures**: Bones, Cartilage, Ligaments, Tendons - **Functions**: Supports the body; protects internal organs; allows movement; stores mineral reserves; contains cells that produce blood cells ## Respiratory System - **Structures**: Nose, Pharynx, Larynx, Trachea, Bronchi, Bronchioles, Lungs - **Functions**: Brings in oxygen needed for cellular respiration and removes excess carbon dioxide from the body ## Digestive System - **Structures**: Mouth, Pharynx, Esophagus, Stomach, Small and large intestines, Rectum - **Functions**: Breaks down food; absorbs nutrients; eliminates wastes ## Excretory System - **Structures**: Skin, Lungs, Liver, Kidneys, Ureters, Urinary bladder, Urethra - **Functions**: Eliminates waste products from the body ## Endocrine System - **Structures**: Hypothalamus, Pituitary, Thyroid, Parathyroids, Adrenals, Pancreas, Ovaries (in females), Testes (in males) - **Functions**: Controls growth, development, and metabolism maintains homeostasis ## Reproductive System - **Structures**: Testes, Epididymis, Vas deferens, Urethra, and penis (in males); Ovaries, Fallopian tubes, Uterus, Vagina (in females) - **Functions**: Produces gametes, in females nurtures and protects developing embryo.