Question

study guide: human body #4
immune and digestive systems

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

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

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)

Assuming the word bank has words like "skin", "immunity", "disease", "pathogens", "response", etc. (from the visible text):

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

Part II: Digestive System (Matching)

• A. small intestine: Most absorption and digestion happens here. (Because the small intestine is the primary site for nutrient absorption and further digestion of food.)
• B. esophagus: This part connects the mouth and stomach. (The esophagus is the muscular tube that transports food from the mouth to the stomach.)
• C. anus: This part controls when feces leave the body. (The anus is the opening at the end of the digestive tract that controls the expulsion of feces.)
• D. mouth: This part chews food and mixes it with saliva. (The mouth is where mechanical digestion (chewing) and chemical digestion (saliva mixing) of food starts.)
• E. large intestine: This part takes water out of the digested food. (The large intestine's main function is to absorb water and electrolytes from the remaining indigestible food matter.)
• F. rectum (Wait, in the given options it's K. rectum? Let's check the options again: The options are A. small intestine, B. esophagus, C. anus, D. mouth, E. large intestine, K. rectum, G. stomach. So correcting:
• G. stomach: This part churns food and secretes digestive juices. (The stomach uses its muscular walls to churn food and secretes gastric juices for digestion.)
• K. rectum: This part stores feces. (The rectum is the final section of the large intestine that stores feces before they are expelled through the anus.)

Matching Answers:

• A (small intestine) - Most absorption and digestion happens here.
• B (esophagus) - This part connects the mouth and stomach.
• C (anus) - This part controls when feces leave the body.
• D (mouth) - This part chews food and mixes it with saliva.
• E (large intestine) - This part takes water out of the digested food.
• G (stomach) - This part churns food and secretes digestive juices.
• K (rectum) - This part stores feces.

If you need more precise answers, please provide the complete word bank for Part I and confirm the exact options for Part II (some option labels seem a bit off in the image, like "K rectum" instead of maybe "F rectum", but we worked with the given labels).

Answer:

Part I: Immune System (Fill in the blanks)

Assuming the word bank has words like "skin", "immunity", "disease", "pathogens", "response", etc. (from the visible text):

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

Part II: Digestive System (Matching)

• A. small intestine: Most absorption and digestion happens here. (Because the small intestine is the primary site for nutrient absorption and further digestion of food.)
• B. esophagus: This part connects the mouth and stomach. (The esophagus is the muscular tube that transports food from the mouth to the stomach.)
• C. anus: This part controls when feces leave the body. (The anus is the opening at the end of the digestive tract that controls the expulsion of feces.)
• D. mouth: This part chews food and mixes it with saliva. (The mouth is where mechanical digestion (chewing) and chemical digestion (saliva mixing) of food starts.)
• E. large intestine: This part takes water out of the digested food. (The large intestine's main function is to absorb water and electrolytes from the remaining indigestible food matter.)
• F. rectum (Wait, in the given options it's K. rectum? Let's check the options again: The options are A. small intestine, B. esophagus, C. anus, D. mouth, E. large intestine, K. rectum, G. stomach. So correcting:
• G. stomach: This part churns food and secretes digestive juices. (The stomach uses its muscular walls to churn food and secretes gastric juices for digestion.)
• K. rectum: This part stores feces. (The rectum is the final section of the large intestine that stores feces before they are expelled through the anus.)

Matching Answers:

• A (small intestine) - Most absorption and digestion happens here.
• B (esophagus) - This part connects the mouth and stomach.
• C (anus) - This part controls when feces leave the body.
• D (mouth) - This part chews food and mixes it with saliva.
• E (large intestine) - This part takes water out of the digested food.
• G (stomach) - This part churns food and secretes digestive juices.
• K (rectum) - This part stores feces.

If you need more precise answers, please provide the complete word bank for Part I and confirm the exact options for Part II (some option labels seem a bit off in the image, like "K rectum" instead of maybe "F rectum", but we worked with the given labels).