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Skeletal System
The skeletal system provides definite shape and mechanical support to the body, and it also helps in movement and locomotion. Ask questions about the skeletal system and bones here.
14,490 Questions
What division of the skeleton contains the humerus?
The humerus is part of the appendicular skeleton.
What three bones make you hear?
They are called the malleus, or hammer, the incus, or anvil, and the stapes, or stirrup.
They evolved from three reptile jaw hinge bones that allow reptile mouths to open wider than their bodies, so they could swallow large prey whole.
What is special about the bones that form the top and sides of the skull?
parietal bone makes up most of the top and sides of the skull
What is the sciencetific words for the 5 parts of the spine?
Cervical, thoracic, lumbar, sacral and coccyx.
What are pads of rubbery protein cushion the movable joints at the ends of many of her bones?
Hyaline cartilage forms pads at the ends of freely moveable joints. Some joints have fibrous cartilage and some joints no longer have any (ex: temporary joint between the two halves of the mandible).
Which group of vertebrae includes the atlas and axis?
The atlas and axis are among the cervical vertebrae.
What material found on the ends of bones?
The ends of bones in moveable joints is like soft but tough leather. At the other joints it varies from thick fibers to none.
What are the 5 bones of the hand between wrist and fingers called?
These intermediate bones are metacarpals. Distally, there are the phalanges, the straight bones of the fingers. These connect to the straight metacarpals. These connect to the carpals, or wrist bones, which connect to the arm bones.
When do bones allow movement to occur?
Your movable bones are attached to skeletal muscles by tendons. Your muscles move to pull the bones, which are often attached by semi-restricted ball-joints, like in your elbows and knees.
What muscle attaches onto the cartilage of the ribs five through seven?
None!
You are thinking of the external intercostal muscle which attaches to the *bone* of the ribs. However, at the cartilage of the rib the muscular portion is replaced by the external intercostal *membrane.*
Muscles produce force on their attachments, causing piezoelectric force which eventually forms the bony landmarks you learn in anatomy lab.
What causes a person to jerk there arm?
A jerk in the body, especially in the leg, can be a symptom of Restless Leg Syndrome, which can be ?ætreated with medication. It can also be a normal reaction to the body trying to relax itself.
What is a tumor composed of cells derived from the blood forming tissues of a bone marrow?
Leukemia
Myeloma is a malignant tumor made up from bone marrow cells.
myeloma
Why shouldn't you move a person with a broken bone?
Moving the injured body part could make it worse, especially if the neck or back is injured.
What is the term for bone formation in the human body?
osteogenesis/ossification is the term for bone formation in the human body. Osteoblasts are a main part of osteogenesis, they are bone cells that form new bone tissue.
What does it mean the skeleton is a live organ?
There are living cells (osteoblasts, osteocytes and osteoclasts) the build, maintain and break down the non-living matrix that surrounds them. They also have an extensive blood and nerve supply.
What bones are included in each of pectoral and pelvic girdles?
The pectoral girdle is formed by the scapula, the humerus and the clavicle 3 bones in total
