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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 are some examples of supernumerary bones?

A bone, such as the http://www.answers.com/topic/os-trigonum, not present in all people, that develops from a separate centre of ossification from the parent bone to which it may or may not be joined.

How is the mandible different from the other bones of the skull?

The mandible is the only moveable bone in the skull, while the other bones are fixed. It serves as the foundation for the lower teeth and provides attachment points for muscles involved in chewing and speaking. The mandible also plays a role in shaping the lower part of the face.

What bones do humans most frequently?

The most commonly broken bones in humans are the wrist bones, in particular the radius and ulna. This often occurs due to falls or accidents where people instinctively try to break their fall with their outstretched hands. Additionally, fractures in the ankle and collarbone are also quite common.

What does the presence of an epiphyseal plate indicate?

The presence of an epiphyseal plates indicates that the bone is still growing. When the bone has stopped growing, the epiphyseal plates will have fused together and are now called epiphyseal lines.
An epiphyseal plate indicates that a person is still growing because its presence is only found in children. Adults have an epiphyseal line in its place. The plate indicates that mitosis is still proliferating the bone tissues.

bone length is increasing

Give a list of the tarsal bones?

The 'tarsus' is a cluster of seven articulating bones in each foot.

The bones that make up the tarsus, i.e. tarsal bones are: medial cuneiform, intermediate cuneiform, lateral cuneiform, navicular, cuboid, talus, and calcaneus.

What is the bone in the upper arm?

The humerus.

Edit: Its the humerus

its easy to remember because of the phrase "funny bone"

funny=humorous=humerus

Is a broken bone or a fractured bone worse?

In general, a broken bone and a fractured bone are the same thing and doctors will use the terms interchangeably.

What is the function of the vertebral column?

The vertebral column serves two main purposes.

  • The vertebrae are support for the body's frame, keeping it standing upright. It connects the head to the rest of the body.
  • To serve as protection for the spinal cord. The bony rings surround the sensitive spinal canal, which transmits the body's electrical transmissions from the brain to the rest of the body.

How does your skeleton compare to the steel frame work of a skyscraper?

The human skeleton provides structure and support for our bodies, much like a steel frame supports a skyscraper. Both are designed to withstand various stresses and forces, with the skeleton adapting and repairing itself similar to how engineers maintain and reinforce steel structures. However, the human skeleton is a living system that can grow and heal, while the steel frame of a skyscraper remains static.

The bone is not protruding from the skin however the arm is in an abnormal position?

It is possible that the arm is dislocated, which can cause the abnormal position. It is important to seek medical attention immediately to assess the injury and potentially correct the dislocation. In the meantime, avoid moving the arm to prevent further damage.

Only freely movable skull bone?

The mandible (lower jaw) is the only freely movable bone in the skull. It is connected to the temporal bone of the skull via the temporomandibular joint, allowing for opening and closing of the mouth, chewing, and speaking. The other bones of the skull are largely immovable and function to protect the brain and provide structural support.

Which bones in the body support most of the body's weight?

The bones in the lower body, such as the femur (thigh bone) and tibia (shin bone), support most of the body's weight. These bones are larger and stronger to bear the load and provide stability during activities like walking, running, and standing.

Compare and contrast the role of PTH hormone and mechanical forces acting on the skeleton?

Parathyroid hormone (PTH) regulates calcium levels in the blood by stimulating bone resorption and increasing calcium absorption in the intestines and kidneys. Mechanical forces on the skeleton, such as weight-bearing exercise, help maintain bone strength by promoting bone formation and remodeling. While PTH directly influences calcium regulation, mechanical forces indirectly influence bone health and density through the stimulation of osteoblast activity.

What system works with bones to allow body movement?

The skeletal system works with the muscular system to allow body movement. Muscles attach to bones via tendons and when muscles contract, they pull on the bones creating movement at the joints. The bones provide structure and support for the body while the muscles provide the force necessary for movement.

What are phalanges and how much do humans have?

20 is incorrect, 56 is the number of phalanges we have, that is 14 in each hand or foot.

Phalanges are the long bones that make up the fingers and toes. There are fourteen phalanges, three for every finger and toe, except for the thumbs and big toes which have only two. Each bone is connected to the wrist and to each other by a joint or knuckle.

Are bones dead or alive?

Bones are considered as living tissues because they contain cells that help in their growth, repair, and maintenance. These cells also participate in the process of bone remodeling, which keeps the bones strong and healthy.

What is the dull pain behind my right rib cage?

A dull pain behind your right rib cage could be caused by various conditions such as gallbladder issues, liver problems, muscle strain, or even gas. It is important to consult with a healthcare provider for proper diagnosis and treatment.

Scientific name for tail bone?

The anatomical term for tail bone is coccyx.

What happens to your spine when you enter space?

The weightless environment of space results in a loss of muscular strength, volume and bone density. This leads to reduced spinal cord excitability, meaning a loss of locomotor function in the legs.

What bone is in the human body but not in a pig?

The hyoid bone is present in the human body but not in pigs. It is a U-shaped bone located in the neck that doesn't articulate with any other bone, providing support for the tongue and aiding in swallowing and speech.

What is the function of cartilage in the bronchus?

Cartilage in the bronchus provides structural support, helping to maintain the shape and patency of the airways. It also prevents collapse of the bronchial walls during breathing, ensuring efficient airflow to the lungs.

Do infants have more bones than adults?

Yes, infants have about 30 more bones than adults.
As we get older, the bones fuse together to get the 206 bones most adults have.
As an infant, these bones (especially those in the skull) are un-fused and thus make up "more" bones.

What bone protects the lungs?

The rib cage is the bone that protects the lungs. The ribs are connected to the thoracic vertebrae at the back and the sternum at the front to form a protective enclosure around the lungs and other vital organs in the chest.