A study of the human anatomy skeletal system

The articular cartilage acts as a shock absorber and gliding surface between the bones to facilitate movement at the joint. The radius allows the forearm and hand to turn over at the wrist joint. Sacrum - 1 vertebra Coccyx tailbone - 1 vertebra With the exception of the singular sacrum and coccyx, each vertebra is named for the first letter of its region and its position along the superior-inferior axis.

Osteoarthritis can affect both the larger and smaller joints of the human skeleton. Blood carries oxygenwaste products, and hormones from one place in the body to another. A distinctive characteristic of humans as compared with other mammals is erect posture.

The vertebral column, corresponding to the notochord in lower organisms, is the main support of the trunk. In children, haematopoiesis occurs primarily in the marrow of the long bones such as the femur and tibia. The epiphyses then grow from secondary ossification centers on the ends of the bone.

At birth, each long bone is made of three individual bones separated by hyaline cartilage. Some combined systems are referred to by joint names. Each finger has three bones known as phalanges, except for the thumb, which only has two phalanges.

The sesamoid bones are formed after birth inside of tendons that run across joints.

Skeletal System

When one considers the relation of these subdivisions of the skeleton to the soft parts of the human body—such as the nervous systemthe digestive systemthe respiratory systemthe cardiovascular systemand the voluntary muscles of the muscle system —it is clear that the functions of the skeleton are of three different types: Fibrous joints also hold teeth in their bony sockets.

The human body is to some extent like a walking tower that moves on pillars, represented by the legs.

An Online Examination of Human Anatomy and Physiology

The rib cagespineand sternum protect the lungsheart and major blood vessels. It involves inflammation of one or more joints.

Study Guide - Skeletal System

See Article History Human skeletal system, the internal skeleton that serves as a framework for the body. The lower arm bones form the wrist joint with the carpals, a group of eight small bones that give added flexibility to the wrist.

Venules and veins collect blood low in oxygen from tissues throughout the body.

Human body

Nevertheless, erect posture has created a number of mechanical problems—in particular, weight bearing. The great majority of the skeletal muscles are firmly anchored to the skeleton, usually to at least two bones and in some cases to many bones.

Deep to the compact bone layer is a region of spongy bone where the bone tissue grows in thin columns called trabeculae with spaces for red bone marrow in between.

The most common form of arthritis: Long bones Long bones are generally larger in males than in females within a given population.

The small joints between the ribs and the vertebrae permit a gliding motion of the ribs on the vertebrae during breathing and other activities.

Galen himself did little dissection though and relied on the work of others like Marinus of Alexandria, [13] as well as his own observations of gladiator cadavers and animals. The sternum connects to the ribs by thin bands of cartilage called the costal cartilage. These organs, the function of which involves motion, expansion, and contraction, must have a flexible and elastic protective covering.Human skeletal system, the internal skeleton that serves as a framework for the body.

This framework consists of many individual bones and cartilages.

Human skeletal system

There also are bands of fibrous connective tissue —the ligaments and the tendons —in intimate relationship with the parts of the skeleton. Portion of the skeletal system that consists of the skull, rib cage, and vertebral column appendicular skeleton Bones of the limbs and limb girdles that are.

Hence, our appendicular skeleton includes the peripheral parts of the human skeletal system, which includes all of the bones in our two arms, legs and the pelvic and pectoral girdles.

For your. Human Anatomy Study Guide The Skeletal System: Chapter 6 Unit Objectives At the end of this unit, you should be able to 1) List the functions of the skeletal system. 2) Describe the anatomy of a long bone and identify its major internal and The diagram below shows a human skeleton.

Identify each of the following bones on the diagram. The human skeleton is the internal framework of the body. It is composed of around bones at birth – this total decreases to around bones by adulthood after some bones get fused together. [1]. The immune, integumentary, skeletal, muscle and reproductive systems are also part of the human body.

Your resource for trusted information about Health and the Human Body

The Circulatory & Respiratory Systems The circulatory system is responsible for transporting.

A study of the human anatomy skeletal system
Rated 3/5 based on 9 review