List some of the degenerative changes that begin during adulthood. (p. 907)

Name: Problem 39, Chapter 23: Hole's Human Anatomy & Physiology
Uploaded: 2020-07-14T23:19:57-08:00
Duration: 4 min 18 s
Channel: Sharon Edamala
Description: List some of the degenerative changes that begin during adulthood. (p. 907)

step 1 Let's talk about emerging adulthood. This is an in -between time in someone's late teens to mid

List some of the degenerative changes that begin during...

Key Concepts

Cellular Senescence

Cellular senescence refers to the gradual deterioration of cellular function over time. With aging, cells accumulate damage from various sources such as free radicals, DNA replication errors, and environmental stress. This loss of efficient cellular repair mechanisms leads to reduced cell turnover and contributes to the overall decline in tissue and organ function seen in adulthood.

Musculoskeletal Degeneration

As part of the aging process, the musculoskeletal system undergoes significant degenerative changes. These include a decline in muscle mass and strength (sarcopenia) as well as a decrease in bone density (osteoporosis). Joint tissues, such as cartilage, may also lose elasticity and resilience, increasing the risk of conditions like osteoarthritis and limiting overall physical mobility.

Neurological Degeneration

Neurological degeneration involves the gradual loss of neurons and synaptic connections that occurs with age. This can result in a decline in cognitive abilities, slower reflexes, and decreased coordination. While not all changes are pathological, the general trend of reduced neural plasticity and efficiency is a common aspect of adult aging.

Connective Tissue Changes

Connective tissues throughout the body, which include skin, ligaments, and tendons, undergo degenerative modifications in adulthood. These tissues often experience a decline in collagen and elastin production, leading to reduced strength and elasticity. This manifests as skin wrinkling, decreased joint support, and a slower healing process, all of which are characteristic of the aging process.

Cardiovascular Changes

The cardiovascular system experiences degenerative alterations with advancing age, including reduced elasticity of arterial walls and thickening of blood vessels. These structural changes can lead to decreased cardiac efficiency, impaired blood flow, and an increased risk of conditions such as hypertension and atherosclerosis, collectively contributing to diminished cardiovascular function in adults.

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