Human body parts

Function What does the skeletal system do? The skeletal system has many functions. Besides giving us our human shape and features, it: • Allows movement: Your skeleton supports your body weight to help you stand and move. Joints, connective tissue and muscles work together to make your body parts mobile. • Produces blood cells: Bones contain bone marrow. Red and white blood cells are produced in the bone marrow. • Protects and supports organs: Your skull shields your brain, your ribs protect your heart and lungs, and your backbone protects your spine. • Stores minerals: Bones hold your body’s supply of minerals like calcium and vitamin D. Anatomy What are the parts of the skeletal system? The skeletal system is a network of many different parts that work together to help you move. The main part of your skeletal system consists of your bones, hard structures that create your body’s framework — the skeleton. There are 206 bones in an adult human skeleton. Each bone has three main layers: • Periosteum: The periosteum is a tough membrane that covers and protects the outside of the bone. • Compact bone: Below the periosteum, compact bone is white, hard, and smooth. It provides structural support and protection. • Spongy bone: The core, inner layer of the bone is softer than compact bone. It has small holes called pores to store marrow. The other components of your skeletal system include: • Cartilage: This smooth and flexible substance covers the tips of your bones where they m...

The human body is an incredible biological machine; it's made up of nearly 100 trillion cells (and contains at least 10 times as many bacteria). Some of the major parts of the body are the skeletal system, the vital organs, the reproductive system, the integumentary system and the muscular system. Each part plays a crucial role in keeping you alive and healthy. The skeletal system is made up of 206 bones connected by various tendons, ligaments and cartilage, and has many vital functions. The system consists of the axial skeleton and the appendicular skeleton. The axial skeleton is made up of 80 bones, including the vertebral column, the rib cage and the skull, and helps you maintain your upright posture. The appendicular skeleton consists of 126 bones that form the pectoral girdles, the upper limbs, the pelvic girdle and the lower limbs, making movement possible and protecting the vital organs. Vital Organs The body contains five vital organs essential for survival. The human brain is like the body's control center, communicating with other organs via secreted hormones and the nervous system. Without your brain, you couldn't think, feel, remember or react to the world around you. The heart pumps blood through the body, giving it the oxygen and nutrients it needs and carrying away waste. The lungs extract oxygen from the air you breathe and sends it to your blood to give your cells energy. The liver is a multi-functional organ, detoxifying dangerous chemicals, breaking down...

The arms are the upper limbs of the body. They’re some of the most complex and frequently used body parts. Each arm consists of four main parts: • upper arm • forearm • • Read on to learn more about the bones, muscles, nerves, and vessels of the upper arm and forearm, as well as common arm problems you may encounter. Upper arm The upper arm includes the shoulder as well as the area between the • Scapula. The • Clavicle. The • Humerus. The The upper arm also contains several joints, including the: • Acromioclavicular joint. The scapula and the clavicle meet at this joint. • Glenohumeral joint. This is the joint where the scapula and humerus meet. • Sternoclavicular joint. The clavicle connects to the sternum (breastbone) at this joint. Forearm The forearm is the area between the elbow joint and the wrist. Its two major bones are the radius and the ulna: • Radius. The • Ulna. The Elbow joint The elbow joint is where the humerus bone of the upper arm connects with the radius and ulna bones in the forearm. The elbow joint is actually composed of three separate joints: • Ulnohumeral joint. This is where the humerus connects to the ulna. • Radiocapitellar joint. At this joint, the radius connects to an area of the humerus called the capitellum. • Proximal radioulnar joint. This joint connects the radius and ulna, allowing for rotation of the hands. The upper arm contains two compartments, known as the anterior compartment and the posterior compartment. Muscle movement Before lea...

Basic Terms and Terminology Relating to the Anatomy and Physiology of the Human Body • Anatomy: The study of the parts and structures of the human body • Physiology: The study of the functions of the human body • Gross anatomy: The study of the parts and structures of the human body that can be seen with the naked eye and without the use of a microscope • Microscopic anatomy: The study of the parts and structures of the human body that can NOT be seen with the naked eye and only seen with the use of a microscope • The frontal plane: Also referred to as the coronal plane, separates the front from the back of the body. • Ventral surface: The front of the body • Dorsal surface: The back of the body • Transverse plane: Also referred to as the cross sectional plane separates the top of the body at the waist from the bottom of the body • Sagittal plane: Also referred to as the medial plane separates the right side of the body from the left side of the body • Anterior: Closer to the front of the body than another bodily part • Posterior: Further from the front of the body than another bodily part • Superior: One bodily part is above another bodily part • Inferior: One bodily part is below another bodily part • Cytology: A subdivision of microscopic anatomy that is the study of the parts and structures of the body's cells • Histology: A subdivision of microscopic anatomy that is the study of the parts and structures of the body's tissues • Cell: The basic building blocks of the hu...

The human skeletal system consists of all of the bones, An adult’s skeleton contains 206 bones. Children’s skeletons actually contain more bones because some of them, including those of the skull, fuse together as they grow up. There are also some differences in the male and female skeleton. The male skeleton is usually longer and has a high bone mass. The female skeleton, on the other hand, has a Regardless of age or sex, the skeletal system can be broken down into two parts, known as the axial skeleton and the appendicular skeleton. The adult axial skeleton consists of 80 bones. It’s made up of the bones that form the vertical axis of the body, such as the bones of the head, neck, chest, and spine. Skull bones The adult skull comprises 22 bones. These bones can be further classified by location: • Cranial bones. The eight • Facial bones. There are 14 facial bones. They’re found on the front of the skull and make up the face. Auditory ossicles The auditory ossicles are six small bones found within the inner ear canal in the skull. There are three auditory ossicles on each side of the head, known as the: • • • They work together to transmit sound waves from the surrounding environment to the structures of the inner ear. Hyoid The Vertebral column The The 24 vertebrae can be further divided into the: • Cervical vertebrae. These seven bones are found in the head and neck. • Thoracic vertebrae. These 12 bones are found in the upper back. • Lumbar vertebrae. These five bones a...