Endocrine glands are the glands that secrete hormones without ducts, while exocrine glands secrete hormones through ducts….Difference Between Endocrine and Exocrine Glands.

There is another type of gland called an exocrine gland (e.g. sweat glands, lymph nodes). These are not considered part of the endocrine system as they do not produce hormones and they release their product through a duct.

The endocrine system differs from the nervous system in that its chemical signals are slower-moving and longer-lasting. Hormones act as chemical messengers within the body, telling it to perform specific physical and mental functions.

Pancreas

stapedius

masseter

The anal sphincter is the smartest muscle in the human body. It must determine the make up of a solid, liquid or gas in a millisecond and get it right every time.

Eye muscles are the busiest muscles in the body. Scientists estimate they may move more than 100,000 times a day!

Common primary diseases of the muscular system include inflammatory myopathies, such as polymyositis and dermatomyositis, muscular dystrophy, myasthenia gravis, amyotrophic lateral sclerosis, rhabdomyolysis, and cardiomyopathy, among others.

Heart

The brain