Answer:
Lactic acid
Explanation: After exercise, lactic acid is produced from anaerobic respiration. This burns your muscles.
Answer:
The pectoralis major is the muscle responsible for pulling the arm forward (felxion) and across chest (adduction) and rotating medially.
Explanation:
A fan-shaped muscle this muscle, present under the breast and in the chest of human body is known as the pectoralis major. The term pectoralis is derived from a Latin word pectus, meaning- breast.
The main function of the muscle pectoralis major is the flexion (pull arm forward) , adduction (pull arm across chest) and internal rotation of the humerus.
Answer:
"The external muscle helps maintain continence and keep stool in the rectum. The inner muscle is not under voluntary control but rather is controlled by the autonomic nervous system. The external sphincter can be voluntarily controlled, meaning it can be clenched and unclenched"
Explanation: