Class 10 Science

Control and Coordination Endocrine System

These notes are based on the chapter Control and Coordination class 10 science of NCERT book and CBSE syllabus

Endocrine Gland

The endocrine system is composed of several endocrine glands. A ductless gland is called endocrine gland. Endocrine gland secretes its product directly into the bloodstream.

Hormones are produced in the endocrine glands. Hormone is mainly composed of protein. Hormones assist the nervous system in control and coordination.

Hormonal Control

Nerves do not reach to every nook and corner of the body and hence hormones are needed to affect control and coordination in those parts. Moreover, unlike nervous control, hormonal control is somewhat slower.

Glands and Hormones

Pituitary gland

  • Also known as the master gland
  • Situated at the base of brain
  • Hormones: Growth hormone (GH), thyroid stimulating hormone (TSH), Follicle stimulating hormone (FSH)
  • Functions: GH stimulates growth, TSH stimulates functioning of thyroid gland, FSH stimulates the follicles during ovulation.

Thyroid Gland

  • Situated in the Neck
  • Hormone: Thyroxine
  • Function: Controls general metabolism and growth in the body.

Adrenal gland

  • Situated above kidneys
  • Hormone: Adrenalin
  • Function: Prepares the body for emergency situations and hence is also called Fight and flight hormone.

Pancreas

  • Situated near stomach
  • Hornome: Insulin
  • Function: Controls blood sugar level

Testis (in Male)

  • Situated in scrotum
  • Hormone: Testosterone
  • Function: Stimulates sperm production, development of secondary sexual characters during puberty.

Ovary (in Female)

  • Situated near uterus
  • Hormone: Oestrogen
  • Function: Egg production, development of secondary sexual characters during puberty.

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The process by which a living being produces its offspring is called reproduction.

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Inheritance of traits from one generation to next is called heredity. All living beings have evolved from a common ancestor.

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Flow of electric charge is called electric current.

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