Question

1. the integumentary system includes the ____ and its accessory organs.

a) thymus gland
b) pituitary gland
c) heart
d) skin

1. identify a true statement about the skin.

a) it is part of the endocrine system.
b) it protects the body from outside elements, such as chemicals, germs, and sun exposure.
c) its primary function is to transport waste material from the body cells to the blood.
d) it supplies oxygen and nutrients to cells.

1. which of the following statements associated with the endocrine system is true?

a) the endocrine system includes skin, oil glands, sweat glands, hair, and nails.
b) the endocrine system coordinates with all other body systems, allowing them to work efficiently and react to the environment.
c) hormones secreted by the endocrine glands seldom influence the body.
d) hormones secreted by the endocrine glands are chemical substances such as estrogen, insulin, and adrenaline, which stimulate activities in the body.

Explanation:

• For question 23, the integumentary system consists of the skin and its accessory organs like hair, nails, sweat - and oil - glands. So the answer is skin.
• For question 24, the skin acts as a barrier protecting the body from external elements such as chemicals, germs, and sun exposure.
• For question 25, hormones secreted by endocrine glands are chemical substances like estrogen, insulin, and adrenaline that stimulate body activities. The endocrine system coordinates body functions, and the listed hormones are well - known examples.

Answer:

1. D. skin
2. B. It protects the body from outside elements, such as chemicals, germs, and sun exposure.
3. D. Hormones secreted by the endocrine glands are chemical substances such as estrogen, insulin, and adrenaline, which stimulate activities in the body.