Muscles form by being torn (soreness) and then they are rebuilt with proteins and are larger.
''goose bumps'' are formed
Lactic acid is the chemical substance formed during anaerobic respiration in muscles when there is not enough oxygen available to meet energy demands.
triceps
Lactic acid is formed
Muscles consist of 2 types of proteins - actin and myosin - which provide the red colour to muscles. Due to difference in concentration of these proteins, striations are also formed which are deep red and light red.
No they are formed when you strain during a bowel movement and weaken your bowel muscles.
Your hair stands up and you get goosebumps
tendons. Formed by colagen and other parts of extracellular matrix
The rectus abdominus muscles are on either side of the linea alba.
Glycogen is stored in the liver and muscles, and is second to fats as long-term energy storage.
Proper rings are only formed by smooth mucle and are called sphincters. NB not all sphoncters are proper ring.
When you excercise, workout or whatever an acid is produced that basically damages your muscles. When your muscles try to recover from this they become larger from the scar tissue formed by the healing process this also explains the pain experienced the day after.