A. Describe the specific changes seen in the microscopic...

a. Describe the specific changes seen in the microscopic anatomy of the sponge bone in response to exercise. b. Based on your explanations, what would you expect to be thicker and heavier; the arm bones of a weightlifter or the arm bones of a jogger? c. Contrastingly, what effect does sedentarism, weightlessness in space or in bedridden patients, have on bones? d. How can these effects be minimized or at least reduced? e. According to the American Heart Association, what are the current recommendations regarding the amount and type of exercise for individuals of different age groups? Explain

Transcript

0:00 Hello everyone.

00:01 So here we are given a series of question that is a series of five questions out of which the first question is asked to describe the changes seen in the microscopic anatomy of the sponge bond in response to exercise.

00:20 That is changes seen in sponge bond in response to exercise.

00:30 Okay.

00:30 Okay, so we know that bones are classified into two types that is either spongy or compact.

00:45 This spongy bond has a honeycomb appearance and it is found at the ends of the bone and usually covered by the hyaline cartilage.

00:58 Hyaline cartilage.

01:03 Now this hyaline cartilage is a tough durable substance that helps prevent wear and tear.

01:09 Now the bone has the ability to alter its strength in response to this mechanical stress.

01:20 And by the process of bond formation and resorption, there is increased deposition of minerals and increased formation of this collagen phyelior.

01:31 Minerals and collagen fibers are formed during this resorption and formation of the bone.

01:43 So these both contribute the bone density and bond strength.

01:51 So if we are doing regular exercise, there will be mechanical stress in our bonds that will contribute to the formation or deposition of the minerals and collagen fibers.

02:03 Eventually will lead to the bond density and a bone strength.

02:10 Okay, so the hyaline cartilage thickens and it helps to cushion the joint, therefore protects the bond from wear and tear.

02:20 Now the second question here asked us which will be, that is b cushion asked us, what will be thicker and heavier? thicker and heavier that is arm bonds of a weight lifter or arm bonds of jogger which will be thicker and heavier so we can say that here the larger arm muscles of the weightlifter would apply more mechanical stress to the bonds of the upper limbs in response to the stress that of the arm bonds of jogger.

03:09 So here we can say that the arm bonds of weight lifter is more thicker and heavier because here the more stress is applied to the bonds of applied to the bonds of the bonds of upper limbs.

03:47 So upper bonds of the weight lifter is more heavier and thicker.

03:55 Now third question asked us, what effect does sedendarism and weightlessness in space? weightlessness in space also in bedridden patients have on their bedridden patients have on their bedlessness.

04:23 Bonds...

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