Human Body Systems Pdf
Body, the hormone system regulates mainly the. Slowly reacting. Metabolic functions. The foundations of the endocrine system are the hormones and glands. As the body's chemical messengers, hormones transfer information and instructions from one set of cells to another. Although many different. Human Body Systems. SKELETAL SYSTEM. The framework of the body, consisting of bones and other tissues, which protect and support the body and internal organs. Skeletal System. Functions: 1. Protection: protects our vital organs 2. Support: Gives our bodies a shape 3. Movement: works with muscles to allow us to move.
Systems, since they produce both hormones and ova. These human body systems are merely useful ways of classifying and studying the structure and function of the body. All together they function and interact with each other and with the surroundings to produce a conscious, living human being. Functions and anatomy of Human Body – Integumentary system Important Facts About Mammary glands. It is an exocrine gland that produces milk. Important Facts About Skin. The largest organ of the integumentary system. Contains pigment melanin that gives skin its color. Composed of three primary layers – epidermis, dermis, and hypodermis. System GET STARTED Laughing, tasting, seeing, hearing, smelling, daydreaming, and singing are just a few of the amazing things we can do because of the nervous system. The nervous system includes the spinal cord, nerves, neurons, and sensory organs: the ears, nose, eyes, tongue, and skin. At the center of it all is the brain. Muscular System Interesting Facts: 1. You have over 30 facial muscles which create looks like surprise, happiness, sadness, and frowning. Eye muscles are the busiest muscles in the body. Scientists estimate they may move more than 100,000 times a day! The largest muscle in the body is the gluteus maximus muscle in the buttocks. The circulatory system is the body's transport system. It is made up of a group of organs that transport blood throughout the body. The heart pumps the blood and the arteries and veins transport it. Oxygen-rich blood leaves the left side of the heart and enters the biggest artery, called the aorta.
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The main systems of the human body are:
- Circulatory system:
- Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
- Keeps the body's temperature in a safe range.
- Digestive system and Excretory system:
- System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, esophagus, stomach and intestines.
- Eliminates waste from the body.
- Endocrine system:
- Influences the function of the body using hormones.
- Integumentary system / Exocrine system:
- Skin, hair, nails, sweat and other exocrine glands
- Immune system and lymphatic system:
- Defends the body against pathogens that may endanger the body.
- The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.
- Muscular system:
- Enables the body to move using muscles.
- Nervous system:
- Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.
- Renal system and Urinary system
- The system where the kidneys filter blood to produce urine.
- Reproductive system:
- The sex organs required for the production of offspring.
- Respiratory system:
- Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.
- Skeletal system:
- Bones maintain the structure of the body and its organs.
- Hematopoietic system:
- Creates the cells that travel in blood
- Clockwise from top left: the integumentary
- endocrine and muscular systems.
- Clockwise from top left: the lymphatic
- urinaryreproductive (female
- male) and digestive systems.