Question

name:_________________________ date:_______ period:__
study guide: human body #4
immune and digestive systems

part i: immune system:
fill in the blanks:
word bank
skin immunity disease remembers

1. the main function of the immune system is to protect against ____________ by detecting and destroying pathogens such as viruses and bacteria.
2. the first line of defense includes barriers such as ____________, mucus, and acid.
3. the innate immune system is non-specific and does not lead to ____________.
4. the adaptive immune system uses immunity, it ____________ pathogens so that the second time a pathogen enters the body, it attacks it more quickly and efficiently.

part ii: digestive system:

1. matching:

a. small intestine this part chews food and mixes it with saliva.
b. esophagus this part churns food and secretes digestive juices.
c. anus most absorption and digestion happens here.
d. mouth this part stores feces.
e. large intestine this part controls when feces leave the body.
f. rectum this connects the mouth and stomach.
g. stomach this part takes water out of the digested food.

Explanation:

Part I: Immune System (Fill in the blanks)

1. Explanation for Q1: The immune system fights against harmful conditions caused by pathogens, which is "disease".

Answer:

disease

1. Explanation for Q2: The first line of defense has physical barriers, and "skin" is a key external barrier.