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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 is axial direction in wood?

Axial direction in wood means its longitudinal direction (the height of the tree when it was growing). Engineers look at this as the direction that cylinder spins on its axis, if log were a roller, the axial direct ion would be along its length.

Why does argon have the smallest atomic radius in period 3?

Argon doesnt have the smallest atomic radius, its chlorine.Argon has the largest atomic radius in period 3.

Why does your jaw make snapping sound when you open and close then the left joint between your lower jaw and upper jaw hurts the next day?

You are describing a symptom of TMD (TemporoMandibular joint Disorder). It sounds like you may be displacing the disc that acts as a cushion between the bones that make up the joint.

For more information on the causes and treatment of TMD, click on the related link below.

What are the antagonists of the shoulder girdle at Upward rotation?

The Trapezius muscles are involved in upward rotation of the scapula. However Trapezius is agonist/antagonist to itself as the upper portion elevates the scapula, the middle portion adducts the scapula and the lower portion depresses the scapula, while all parts are involved in upward rotation of the scapula.

The Serratus Anterior assists in rotating the scapula (glenoid fossa) upward, (which would make it a synergist with the trapezius). The Serratus Anterior is antagonist to the upper and middle portions of Trapezius, so we are back to the agonist /antagonist relationship of the traps.

That's about all I can contribute to this question.

What is a knee baby?

a baby born in the middle of two sibblings

What are mammoth bones?

Calcium, and bones(be more specific).

Substance in the center of the bones?

The substance in the center of the bones is called Bone Marrow. There is yellow marrow and red marrow.

What are the 3 processes found on the bone?

Most vertebrae have 3 processes. The spinous process, which is the one that comes straight off of your vertebral column, can actually be felt . You can feel this one particularly well at the base of your neck (this is the 7th Cervical vertebra, also known as Vertebra prominens). The very first vertebra, C1, also known at Atlas, does not have a spinous process. Each vertebra has two transverse processes which are on either side of the spinous processes. All of these processes are important for muscle attachments for movement of the head, neck and torso.

What is the Epicondyle bone?

The medial

epicondyle is a bony protrusion that can be felt on the inside part of the elbow. Part of the upper arm bone, orhumerus, it occurs at the bottom of the bone where the humerus meets theulnaat the elbow. It is larger and further back on the bone than its counterpart --- the lateral epicondyle

. The medial epicondyle

provides attachment of the ulnarcollateralligamentto the pronator teres muscle, near the back of the elbow. When theulnar nervethat runs along the back of this bone is hit, it is frequently referred to as hitting the funny bone.

Like many bones in the body, the medial

epicondyle may be rarely thought about until it is involved in an injury. Fracture of the medial

epicondyle represents the third most common elbow fracture in children, especially those 9 to 14 years old. In children and adolescents, the growth plate between the humerus and the ulna is made of cartilage cells that are softer and more susceptible to trauma than fully formed, mature bone. It is possible in extreme injuries for the growth plate to tear from the connection with the bone, resulting in an convulsion fracture.

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What is the function of the pelvic?

In all animals with legs, its use to connect the back legs to the spine. In female mammals, its wider so that offspring can have room to develop. In humans, its unique shape is what allows us to walk upright.

What is the value of g at a distance of twice the earth's radius if the value of g on the earth's survace is about 9.8 meters per second squared?

We know that,

g1=G.m/R2

so, g is inversely proportional to R2.

And, if Radius of the earth(R) is doubled, the distance between the object and the centre of the earth will become 2R.

Now, g=G.m/(2R)2

=> g2=G.m/4R 2

=> g2=1/4(G.m/R2)

Since, G.m/R2 =g1

=> g2=1/4 g1

Here, g1=9.8 m/s2

So, g2=9.8/4 m/s2

=2.45 m/s2

What does abnormal MRI brain demonstrating heterogeneous bone signal mean?

Many things, most common is anemia. Differntial is multiple myeloma, mets, leukemia, and myelofibrosis. Findings have to be correlated with patient history and labs.