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ANATOMY SYSTEMS. Skeletal System The skeletal system includes all of the bones and joints in the body. Muscular System The muscular system is responsible for the movement of the human body. Cardiovascular System The cardiovascular system consists of the heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport.
- Muscular
The muscular system is responsible for the movement of the...
- Skeletal
The Skeletal System. Explore the skeletal system with our...
- Digestive
Human Body. The Digestive System Use our 3D models and...
- Nervous
The nervous system consists of the brain, spinal cord,...
- Respiratory
The cells of the human body require a constant stream of...
- Cardiovascular
The cardiovascular system consists of the heart, blood...
- Muscular
5 days ago · human skeleton, the internal skeleton that serves as a framework for the body. This framework consists of many individual bones and cartilages. There also are bands of fibrous connective tissue —the ligaments and the tendons —in intimate relationship with the parts of the skeleton. This article is concerned primarily with the gross ...
Part of the TeachMe Series The medical information on this site is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes. This information is intended for medical education, and does not create any doctor-patient relationship, and should not be used as a substitute for professional diagnosis and treatment.
- Skull
- Hyoid and Auditory Ossicles
- Vertebrae
- Ribs and Sternum
- Pectoral Girdle and Upper Limb
- Pelvic Girdle and Lower Limb
- Microscopic Structure of Bones
- Types of Bones
- Parts of Bones
- Articulations
The skull is composed of 22 bones that are fused together except for the mandible. These 21 fused bones are separate in children to allow the skull and brain to grow, but fuse to give added strength and protection as an adult. The mandible remains as a movable jaw bone and forms the only movable joint in the skull with the temporal bone. The bones ...
The hyoid is a small, U-shaped bone found just inferior to the mandible. The hyoid is the only bone in the body that does not form a joint with any other bone---it is a floating bone. The hyoid's function is to help hold the trachea open and to form a bony connection for the tongue muscles. The malleus, incus, and stapes---known collectively as the...
Twenty-six vertebrae form the vertebral columnof the human body. They are named by region: 1. Cervical(neck) - 7 vertebrae 2. Thoracic(chest) - 12 vertebrae 3. Lumbar(lower back) - 5 vertebrae 4. Sacrum- 1 vertebra 5. Coccyx(tailbone) - 1 vertebra With the exception of the singular sacrum and coccyx, each vertebra is named for the first letter of i...
The sternum, or breastbone, is a thin, knife-shaped bone located along the midline of the anterior side of the thoracic region of the skeleton. The sternum connects to the ribs by thin bands of cartilage called the costal cartilage. There are 12 pairs of ribs that together with the sternum form the ribcage of the thoracic region. The first seven ri...
The pectoral girdle connects the upper limb (arm) bonesto the axial skeleton and consists of the left and right clavicles and left and right scapulae. The humerus is the bone of the upper arm. It forms the ball and socket joint of the shoulder with the scapula and forms the elbow jointwith the lower arm bones. The radius and ulna are the two bones ...
Formed by the left and right hip bones, the pelvic girdle connects the lower limb (leg) bonesto the axial skeleton. The femur is the largest bone in the body and the only bone of the thigh (femoral) region. The femur forms the ball and socket hip joint with the hip bone and forms the knee jointwith the tibia and patella. Commonly called the kneecap...
The skeleton makes up about 30-40% of an adult's body mass. The skeleton's mass is made up of nonliving bone matrix and many tiny bone cells. Roughly half of the bone matrix's mass is water, while the other half is collagen protein and solid crystals of calcium carbonate and calcium phosphate. Living bone cells are found on the edges of bones and i...
All of the bones of the body can be broken down into five types: long, short, flat, irregular, and sesamoid. 1. *Long. *Long bones are longer than they are wide and are the major bones of the limbs. Long bones grow more than the other classes of bone throughout childhood and so are responsible for the bulk of our height as adults. A hollow medullar...
The long bones of the body contain many distinct regions due to the way in which they develop. At birth, each long bone is made of three individual bones separated by hyaline cartilage. Each end bone is called an epiphysis (epi = on; physis = to grow) while the middle bone is called a diaphysis (dia = passing through). The epiphyses and diaphysis g...
An articulation, or joint, is a point of contact between bones, between a bone and cartilage, or between a bone and a tooth. Synovial joints are the most common type of articulation and feature a small gap between the bones. This gap allows a free range of motion and space for synovial fluid to lubricate the joint. Fibrous joints exist where bones ...
Aug 30, 2018 · The human skeletal system consists of all of the bones, cartilage, tendons, and ligaments in the body. Altogether, the skeleton makes up about 20 percent of a person’s body weight.. An adult’s ...
Sep 21, 2024 · Chemical composition of the body. Chemically, the human body consists mainly of water and of organic compounds —i.e., lipids, proteins, carbohydrates, and nucleic acids. Water is found in the extracellular fluids of the body (the blood plasma, the lymph, and the interstitial fluid) and within the cells themselves.
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Sep 27, 2024 · Function. Conditions. Diagnosis. Skeletal system photos and labeled diagrams can help you to understand the parts of the skeleton, how it's organized, the conditions that can affect it, and tests used to diagnose skeletal health. The skeletal system comprises 206 bones and has two main parts: the axial skeleton and the appendicular skeleton.
