Question

1. choose all that apply.

in which two ways does the integumentary system act as a protective barrier?
guard cells move across the skin attacking bacteria and dust particles.
the skin keeps everything safely contained inside the body.
the skin creates a weak electrical field that repels pathogens.
the skin keeps out bacteria, dust particles, and even damaging objects.

1. choose all that apply.

choose the two layers of the skin.
epidermis
lymph nodes
cartilage
dermis

Explanation:

For question 1: The integumentary system (skin) acts as a physical barrier that keeps internal body components contained and prevents external threats like bacteria, dust, and debris from entering. Guard cells are part of plant stomata, not human skin, and skin does not produce an electrical field to repel pathogens.
For question 2: The skin has two primary layers: the outer epidermis and the inner dermis. Lymph nodes are part of the lymphatic system, and cartilage is a connective tissue unrelated to skin layers.

Answer:

1)

• The skin keeps everything safely contained inside the body.
• The skin keeps out bacteria, dust particles, and even damaging objects.

2)

• epidermis
• dermis