Great Glands - Your Endocrine System: CrashCourse Biology #33

What is the primary function of hormones in the body?

• To provide structural support to cells.

• To act as chemical messengers.

• To generate electrical impulses for muscle movement.

• To break down food for energy.

How do the responses of the endocrine system differ from those of the nervous system?

• Endocrine responses are faster and short-lived.

• Nervous system responses take longer to start but last longer.

• Endocrine responses take longer to start but have longer-lasting effects.

• Nervous system responses only affect glands, while endocrine responses affect muscles.

Which type of gland secretes substances like saliva and sweat outside the body?

• Endocrine glands

• Exocrine glands

• Pituitary glands

• Thyroid glands

What is the role of the pituitary gland in the endocrine system?

• It directly controls all muscle contractions.

• It acts as a "master gland" that instructs other glands to produce hormones.

• It filters waste products from the blood.

• It produces digestive enzymes for the stomach.

Which of the following is a primary function of the adrenal glands?

• Regulating blood sugar levels

• Controlling sleep cycles

• Maintaining salt and water balance in the body

• Producing digestive enzymes

What hormone is released by the adrenal glands during a "fight or flight" response, leading to increased heart rate and blood flow to muscles?

• Insulin

• Testosterone

• Epinephrine

• Glucagon

When blood glucose levels rise after eating, what hormone does the pancreas release to help cells absorb glucose?

• Glucagon

• Epinephrine

• Insulin

• Testosterone

Based on Alfred Jost's experiments with bunny embryos, what is the default biological sex development for mammalian embryos if no specific hormones are present?

• Male

• Female

• Intersex

• Undetermined