Exploring Body Systems for Regents Review

The video tutorial covers the body's major systems, focusing on the nervous, endocrine, and immune systems. It explains how the nervous system facilitates cell communication and maintains homeostasis. The endocrine system's role in hormone production and feedback mechanisms is discussed, with examples like blood sugar regulation. The immune system's function in fighting infections and producing antibodies is also covered, including the body's response to pathogens and allergens.

What is the primary function of the nervous system?

• Digesting food

• Cell-to-cell communication

• Circulating blood

• Producing hormones

How do cells in the nervous system communicate with each other?

• Using receptors on cell membranes

• By producing antibodies

• By releasing enzymes

• Through blood vessels

What is the main role of the endocrine system?

• Producing hormones

• Fighting infections

• Digesting food

• Circulating blood

What term is used interchangeably with hormones in the endocrine system?

• Pathogens

• Antibodies

• Chemical messengers

• Enzymes

Which hormone lowers blood sugar levels?

• Thyroxine

• Insulin

• Adrenaline

• Glucagon

What condition is characterized by the inability to regulate blood sugar levels?

• Diabetes

• Asthma

• Arthritis

• Hypertension

What is the primary function of the immune system?

• Digesting food

• Fighting infections

• Circulating blood

• Producing hormones

What do white blood cells produce to fight off infections?

• Glucose

• Hormones

• Enzymes

• Antibodies

What is an antigen?

• A blood cell

• A digestive enzyme

• A protein ID tag

• A type of hormone

What is an allergic reaction?

• A blood circulation issue

• A digestive disorder

• A type of infection

• A response to a harmless substance