Question

Astronauts in a zero gravity environment experience which of the following

a-hypertrophy of fast glycolytic muscle fibers
b-hyperactivity of osteoblasts
c- increased activity of chondrocytes in epiphyseal plates
d-advanced degradation of bone by osteoclasts

Answer 1

Astronauts in a zero gravity environment experience atrophy of fast glycolytic muscle fibers and a corresponding loss of bone mass.

The correct answer is d-advanced degradation of bone by osteoclasts.

Step-by-step explanation:

Astronauts in a zero gravity environment experience atrophy of fast glycolytic muscle fibers and a corresponding loss of bone mass. This is caused by the lack of mechanical stress on their muscles and bones due to the low gravitational forces in space. Lack of mechanical stress causes muscles to waste away and bones to lose mineral salts and collagen fibers.

Astronauts in a zero gravity environment experience atrophy of fast glycolytic muscle fibers and a corresponding loss of bone mass. This is caused by the lack of mechanical stress on their muscles and bones due to the low gravitational forces in space. Lack of mechanical stress causes muscles to waste away and bones to lose mineral salts and collagen fibers.