A person works an office job that requires them to be in a sitting position for 10 hours a day. They go home and sit until they go to bed. This person never exercises and rarely gets up to move around after being seated. Their joints begin to constantly feel stiff and painful. On a physiological level, what has happened to cause these symptoms?
A. Disuse of the joint causes ossification of the fibrocartilage, creating arthritic joints.
B. Lack of movement hinders blood from moving through the vessels of the synovial membrane, which starves the ligaments of nutrients and causes them to lose elasticity.
C. Being stuck in the same position for long periods of time causes the ligaments to physically decay, stiffening the joints.
D. Lack of movement drives the synovial membranes to stop producing synovial fluid, which then causes friction to generate upon movement of the joints.
Answer: B
You might also like to view...
Which of the following substances is an element?
A. Sodium chloride B. Iron C. Glucose D. Water
Which of the choices below is NOT a role of the pleurae?
A) allow the lungs to easily glide easily over the thorax wall during breathing movements B) assist in blood flow to and from the heart because the heart sits between the lungs C) help limit the spread of local infections D) help divide the thoracic cavity into three chambers
The outer surfaces and walls of bones are composed of ________ bone.
Fill in the blank(s) with the appropriate word(s).
Which of the following organs may be directly affected by malrotation of the caudal limb of the primary intestinal loop?
(A) Descending colon (B) Stomach (C) Spleen (D) Fourth part of the duodenum (E) Ascending colon