The system synthesizes vitamin D3 which converts to , for normal metabolism of calcium. Treatment can range from exercise to surgery. Immediately inferior to the head is a slight constriction called anatomical neck. Skeletal muscles, attached to bones by tendons, use the bones as levers to move the body and its parts. The acromion is the enlarged end of the spine of the scapula and connects with the clavicle laterally at the acromioclavicular joint. Percentage score will be displayed along with right answers. A tendon sheath is essentially an elongated bursa that wraps completely around a tendon subjected to friction, like a bun around a hotdog.
The eight carpal bones, arranged in two irregular rows of four bones each, form the part of the hand called carpus, or, more commonly, the wrist; the carpals are bound together by ligaments that restrict movements between them. Articular cartilage, instead of a periosteum, covers its external surface; because the articular cartilage is glassy hyaline cartilage, it provides a smooth, slippery surface that decreases friction at joint surfaces. As a result, bone matrix has decreased flexibility and is more easily broken than normal bone. Skeletal System Test Questions Showing top 8 worksheets in the category - Skeletal System Test Questions. Distally, a process called medial malleolus forms the inner bulge of the ankle.
Text Mode:All questions and answers are given on a single page for reading and answering at your own pace. Bones of the Pelvic Girdle The pelvic girdle is formed by two coxal bones, or ossa coxae, commonly called hip bones. There are two categories of bone markings: a projections, or processes, which grow out from the bone surface, and b depressions, or cavities which are indentations in the bone; a little trick for remembering some of the bone markings are all the terms beginning with T are projections, while those beginning with F except facet are depressions. C: Many bones contain cavities filled with bone marrow that gives rise to blood cells. Which bone floats in our body? In the midpoint of the shaft is a roughened area called the deltoid tuberosity, where the large, fleshy deltoid muscle of the shoulder attaches. The small joints between the ribs and the vertebrae permit a gliding motion of the ribs on the vertebrae during breathing and other activities. The connection of the ribs to the breastbone—the —is in all cases a secondary one, brought about by the relatively pliable costal cartilages.
D: Spiral fractures are complete fractures of long bones that result from a rotational force applied to the bone. The small rectangular bones forming the bridge of the nose are the nasal bones. Each scapula has a flattened body and two important processes- the acromion and the coracoid. The beaklike coracoid process points over the top of the shoulder and anchors some of the muscles of the arm; just medial to the coracoid process is the large suprascapular notch, which serves as a nerve passageway. Cartilage is rubbery, and bone is firm. Bones that do not fit one of the preceding categories are called irregular bones.
Anteriorly on the distal femur is the smooth patellar surface, which forms a joint with the patella, or kneecap. But they have another role which is tocreate a form on which everything else can. The fracture extends through a portion of the bone, causing it to bend on the other side. The lacunae are arranged in concentric circles called lamellae around central Haversian canals. Anterolateral to the head are two bony projections separated by the intertubercular sulcus— the greater and lesser tubercles, which are sites of attachment. What is the name of joint between ribs and sternum? The remaining 5 supporting the lower back are lumbar vertebrae. Thoracic Cage The sternum, ribs, and thoracic vertebrae make up the bony thorax; The bony thorax is routinely called the thoracic cage because it forms a protective, cone-shaped cage of slender bones around the organs of the thoracic cavity.
Leg Connected along their length by an interosseous membrane, two bones, the tibia and fibula, form the skeleton of the leg. Running through the central cavity of the vertebral column is the delicate spinal cord, which the vertebral column surrounds and protects. Protection of the , , and other organs and structures in the chest creates a problem somewhat different from that of the central nervous system. The Hyoid Bone Though not really part of the skull, the hyoid bone is closely related to the mandible and temporal bones. Structurally, there are fibrous, cartilaginous, and synovial joints; these classifications are based on whether fibrous tissue, cartilage, or a joint cavity separates the bony regions at the joint.
To link bones to bones To link muscles to bones To link muscles to ligaments To bind the cells in compact bone closer together. Bone related with skull is coracoid atlas pterygoid arytenoid 8. So don't be a bonehead, take a quiz to test your knowledge of the skeletal system! Spongy bone is composed of long, needle-like pieces of bone and lots of open space. The curvatures in the cervical and lumbar regions are referred to as secondary curvatures because they develop some time after birth. Without the skeletal system, you would be a limp mass of organs, muscle, and skin.
C: Intramembranous ossification is the direct laying down of bone into the primitive connective tissue mesenchyme. C: Osteomyelitis is bone inflammation that often results from bacterial inflammation, and it can lead to the destruction of the bone. Short bones are generally cube-shaped and mostly contains spongy bone; sesamoid bones, which form within tendons, are a special type of short bone. There are two types of bone marrow: yellow marrow and red marrow. By: stina on Jul 18, 2010 has a lot of weird bones By: jimbob on Jul 16, 2010 yuipppee! By: Tom on Aug 16, 2010 the Skeletal system is a very vailable piece in your body,if you did not have your bones you practicaly be a leathery pile of slop By: Rosshlein on Aug 16, 2010 It's a nice quiz and can improve you intelligence , i dont know all of the answers but I tell you , it's very enjoying!! It consists of a relatively few large bones, the , the bone, two temporal bones, two parietal bones, and the.
The interior nasal conchae are thin, curved bones projecting medially from the lateral walls of the nasal cavity. Lateral curvatures scoliosis can be severe enough to slip under the shoulder blade scapula forcing it up as a hump. The head of the femur contains both yellow and red marrow. The false pelvis is superior to the true pelvis; it is the area medial to the flaring portions of the ilia. They are larger than the cervical vertebrae and are distinguished by the fact that they are the only vertebrae to articulate with the ribs. The slitlike superior orbital fissure is where the cranial nerves controlling eye movements pass. Flat bones are thin, flattened, and usually curved; they have two thin layers of compact bone sandwiching a layer of spongy bone between them.
By: Mary Grace Denuevo on Aug 9, 2013 very hard,,but quiet helpful. B: An example of a hinge joint knee, elbow, and finger joints. The is to some extent like a walking tower that moves on pillars, represented by the legs. The xiphisternal joint, the point where the sternal body and xiphoid process fuse, lies at the level of the ninth thoracic vertebra. Questions after questions about the skeletal system, the all important mechanism holding us together. Calcium ions, for example, are essential for muscle contractions and controlling the flow of other ions involved in the transmission of nerve impulses.