The muscles primarily used in the farmer's carry exercise are the forearms, shoulders, and core muscles.
Arteries carry oxygen to the muscles of the body.
Mostly the biceps and back muscles.
Everyone needs muscles; without muscles, you would not be able to complete any task, from running a marathon to even typing this question. Without muscles, you would not even be able to breathe; your heart would not beat. You would not even be able to sit up. Muscles are used for EVERY action, and are even used when no action is happening. Thus, everyone needs muscles.
chicken
Soccer!!
trapazoids
The primary muscles used to lift and carry a saddle are your biceps, triceps, pectorals and deltoids. To build up the muscles, you can lift weights, targeting those muscles.
Muscles or glands which carry out the responses
You bet.
Essentially nothing but to carry them around. There are nerves that try to keep track of what muscles are doing ... but the muscles are not actually involved with this.
Muscles or glands which carry out the responses