Endocrine System - Anatomy & Physiology

How do the nervous and endocrine systems coordinate functions of the body?

• By releasing neurotransmitters and hormones, respectively

• Through physical movement and reflexes

• By producing waste products

• Through blood circulation and respiration

Tags

NGSS.HS-LS1-3

What is a hormone?

Tags

NGSS.HS-LS1-3

How do hormones reach their target cells in the body?

• Through the nervous system

• By entering interstitial fluid and then the bloodstream

• Via direct cell-to-cell contact

• Through the lymphatic system

Which of the following mediators acts as both a neurotransmitter and a hormone?

• Insulin

• Norepinephrine

• Estrogen

• Acetylcholine

What do exocrine glands secrete their products through?

• Blood capillaries

• Hormones

• Ducts

• Neurotransmitters

Endocrine glands secrete hormones into what before they enter blood capillaries?

• Ducts

• Body cavities

• Interstitial fluid

• Vascular tissues

Which of the following is NOT a component of the endocrine system?

• Pituitary gland

• Hypothalamus

• Salivary gland

• Adrenal gland

How does the nervous system control homeostasis?

• Through hormones acting slowly

• Through ducts and body cavities

• Through nerve impulses and neurotransmitters acting locally and quickly

• Through interstitial fluid

Tags

NGSS.HS-LS1-3

Hormones affect only specific target cells that have what?

• Blood vessels

• Receptors to recognize (bind) a given hormone

• A nucleus

• Mitochondria

What can happen to the number of hormone receptors in target cells?

• They can only increase.

• They can only decrease.

• They can either decrease (down-regulation) or increase (up-regulation).

• They remain constant throughout life.

Tags

NGSS.HS-LS1-3