Question

1.

What is the cause of rheumatoid arthritis?

	an autoimmune response
	normal wear and tear on joints
	a traumatic event, like a fall
	the action of many over-the-counter medications

2. Which is an example of a multiaxial joint?

	knee
	elbow
	shoulder
	knuckle

3. Which term describes an angular movement away from the midline of the body

	flexion
	extension
	adduction
	abduction

4. Which term describes the movement of a body part in the posterior direction?

	protraction
	retraction
	elevation
	depression

5. A hinge joint is correctly classified as which of the following?

	nonaxial
	uniaxial
	biaxial
	multiaxial

Answer 1

Answer 1 ---- ( A ) autoimmune response

Rheumatid arthritis is the autoimmune disorder which cause the pain and inflammation in more than one joint.

It is caused when body immune system by any mistake attacks on body cells and that results in various part effect.

Rheumatoid arthiritis is the part of the diseases rheumatic fever in which heart , brain , skin and subcutaneous nodules are also affected.

So it is majorly caused due to the mistake of the immune response and so the answer A.

While the others options are wrong because wear and tear mechanism in a joints are seen in the degenerative disorders of the joint where they are affected due to age such as osteoarthritis in which joints pains more and causes discomfort in movement so that is different from RA.

While traumatic event in the joint can cause cause degeneration of the joints or it also cause local inflammation due to trauma so that also wrong.

While over counter medication are some medications which are given in various problem like arthritis also to solve the problem and they are not regarded as the cause of the RA.

SO THE FINAL ANSWER IS A.

Answers 2-- (C) shoulder joint

The joints which gives the movement to body in three axis or planes are called as the multiaxial joint and that of which gives in only one direction are called as the uniaxial joints.

There are two joints which is hips and shoulder that are regarded as the multiaxial joints as because they provide the movement in all three axes or planes.

So the example of the multiaxial joint is shoulder joint while others are not because.

Knuckle joint provides movement in two direction so called as the biaxial joint and that of elbow joint and knee joints are mono axial and so out of four only shoulder is the multiaxial joint.

Answer 3--- (D) abduction

Body have some terms which defines the anatomical movement of the bones organs everything.

And all the movements are explained in regard of the midline of the body.

When there is angular movement away from the body it is called as the abduction.

Movement is something change from the rest position which is done in order to perform any action.

So when there is movement away from the midline it is ABDUCTION and when it is towards the midline it is called as the ADDUCTION.

So the answer is D ABDUCTION.

While the two terms which are more given are also type of the action given

Flexion is the movement of the joint of part in such manner that angle between the two gets decreased is called flexion and extension or to extend is in which angle increases.

So here answer is D.

Answer 4---- ( B ) retraction.

These are also four position which are also called as the anatomical positions which visceras also do.

Movement of the body part that makes it move in posterior direction is retraction and that which makes move forward called as the protraction.

And the movement of the body part that makes it move in superior direction is called elevation and that moves it in inferior direction is called depression.

So the correct answer is here B retraction.

Answer 5 ------( B ) uniaxial

Hinge joints are those joints which are very simple type of joints that provide the motion is one direction only and are called as the uniaxial joint and examples are knee and elbow joints.

So the answer is uniaxial joints.

While other options are wrong because hinge joints are always uniaxial and multiaxial joints falls in another category like ball and socket joint etc.

The. Answer is B uniaxial.

Good wishes do upvote.