Human Anatomy and Physiology
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Back Neck and Spine
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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.

Asked in Skeletal System

How many bones are in the adult human body?

The adult human body has 206 bones. An infant may have from 300-350 bones at birth. Many of these fuse together as the infant grows. When some bones fuse and become one bone (most obvious examples are in the skull, sacrum and hip bones) the number of overall bones drops to the 206 bones that most adults have. Of the 206 bones in the adult human body, more than half (106) are in the hands and feet. The adult skeleton consists...
Asked in Growth Rates, Human Anatomy and Physiology, Skeletal System

Why do babies have more bones than adults?

Over the course of childhood and adolescence, many bones in the skull and pelvis fuse together. These are the largest and widest parts of a baby's body, having them composed of several loosely connected bones permits them to flex more during birth, making the process easier on both mother and baby. In adults it is more important for these same bones to be hard and strong, so by then they are mostly fused into a small number of larger bones. It depends...
Asked in Skeletal System

What is the name for the place where two bones meet?

It is called a joint which is surronded by cartilage and ligaments.
Asked in Biology, Skeletal System

What are examples of hinge joints?

The most typical hinge joints is the elbow, which attaches the Humerus to the Radius and Ulna. Some say the interphalangeal joints between the bones in your fingers are hinge joints; others call them condyloid joints Hinge joints that are a bit atypical, as they allow some limited rotation include the: knee, or tibiofemoral joint. This is the largest hinge joint. The patellofemoral joint, between the kneecap and thighbone, is not a hinge joint.. The knee is sometimes considered a modified hinge joint or...
Asked in Skeletal System

What joints are used when an acrobat bend his body backward?

1) Inter-Vertebral joints. Mainly Lumber, Cervical, partially Thoracic. 2) Cranio-cervical or Atlanto-occipital joint. 3) Lumbo-sacral joint. 4) Hip joint. 5) Knee joint. 6) Ankle joint.ALL of them extended. ...
Asked in Skeletal System

Explain the difference why there are more bones among children than men?

There are 206 bones in the body.When a baby is born the bones in his head are not yet fused together. This is so that the baby's head may mold to fit through the vaginal canal at birth and also to allow for brain growth that occurs rapidly over the next several months. Since they have yet to fuse (seal together) to make one bone (the skull), many people count them as individual bones. ...
Asked in Skeletal System

What does ribs mean?

Ribs contain and support the thoracic cavity, which includes the heart/lungs/liver. The liver is localized in the abdominal cavity, under the diaphragm . If the liver is in the thoraxic cavity thats abnormal. ...
Asked in Skeletal System

Does rheumatoid arthritis cause cracking bones not literally like breaking but cracking noises?

This noise, unless, painful, is due to air in the joint. See link below about joint popping. ...
Asked in Skeletal System

How many chromosomes are found in a bone cell?

It depends on the organism.
Asked in Skeletal System

What are the functions of the skeletal system?

The skeletal system in the body provides the shape, supports and protects organs and the soft areas of the body. Its others functions are bodily movement, producing blood for the body, and storing minerals that the physical structure needs. Shape and Support The skeleton is made up of various bones and provides the framework for the body. Thus, the skeleton provides the basic shape and structure for the body. The bones are like the structural members of a building, and all of the...
Asked in Skeletal System

What is the rounded knob on the humerus that articulates with the radius?

The capitulum on the humeral condyle articulates with the head of the radius to form a pivot joint. ...
Asked in Skeletal System

Can you get rib cancer?

In a way, yes, you can indeed get rib cancer. There is a cancer called bone cancer and a rib is a bone, so, if you have bone cancer in your ribs, then you have rib cancer. ...
Asked in Skeletal System

What is a weird named bone in your body?

How about the "stirrup"? It is a tiny bone in your inner ear.
Asked in Skeletal System

What is the five major bones in your body?

The Skull The Ribs The Spine (Backbone) The Pelvis The Femur (Thigh bone) ...
Asked in Back Neck and Spine, Chiropractic, Skeletal System

Is cracking your back unhealthy?

"Cracking" your back is not so bad at all if you are a young and healthy individual. The concern tends to be that there are some risks associated, such as fracture, sprain, strain, etc. These risks are very low when an adjustment ("cracking") is performed by a skilled professional (eg: doctor of chiropractic), but when performed by yourself, or by another unskilled person, the risks increase. Even when performed by the unskilled, the risks tend to be relatively non-severe for young and...
Asked in Skeletal System

Can cracked ribs cause a lung infection?

Yes it can. Due to the pain of the 'cracked' (broken or contused) ribs, one tends to breath more shallowly and take less deep breaths. Normally deep breaths help to move the mucus that is formed in the airway up into the throat, where it is swallowed unnoticed. If the formed mucus is not cleared properly it will accumulate in the lungs (due to gravity mostly in the lower lobes). This mucus is ideal for bacteria to grow in (warm and humid)...
Asked in Skeletal System

Where is red bone marrow found in adult skeleton?

It lies entirely within the spaces of bone: medullary cavity of young long bones, or spaces of spongy bone ...
Asked in Skeletal System

What is the protective layer that covers bones?

The periosteum is the protective layer that covers bones. priosteum
Asked in Geometry, Skeletal System

Find the circumference of a circle whose radius is 4 feet?

The correct answer is 25.13 feet, not the figure given below - which is twice as large. ...