Effects of Exercise on the Body

This video from Mumu Math and Science discusses the benefits of regular exercise on the body. It highlights how exercise can positively impact the brain by increasing the size of the cortex and hippocampus, and enhancing blood vessel growth. On a cellular level, exercise boosts the number of mitochondria, increasing cell energy. In the circulatory system, it strengthens the heart, enlarges veins and arteries, and improves oxygen transport. For the respiratory system, exercise enhances lung efficiency and increases capillaries around alveoli, leading to better stamina and health.

What type of exercise is suggested to gain health benefits?

• Running marathons

• Lifting heavy weights

• Swimming for hours

• Regular, moderate exercise

Which part of the brain increases in size due to exercise?

• Amygdala

• Medulla

• Cortex

• Cerebellum

What cellular component increases in number with exercise?

• Lysosomes

• Nuclei

• Ribosomes

• Mitochondria

How does exercise affect the heart muscle?

• Reduces its size

• Strengthens it

• No effect

• Weakens it

What happens to the veins and arteries with regular exercise?

• They disappear

• They shrink

• They become more flexible

• They become rigid

Which muscles are strengthened in the respiratory system due to exercise?

• Abdominal muscles

• Diaphragm and intercostal muscles

• Biceps

• Triceps

What is the effect of exercise on lung efficiency?

• Makes it erratic

• Increases it

• No change

• Decreases it

What surrounds the alveoli that increases with exercise?

• Capillaries

• Bone tissue

• Nerve endings

• Muscle fibers