1. The immune system ​ (a)   , isolates and ​ (b)   ​ (c)   substances.

• detects
• destroys
• harmful
• helpful
• nurtures

The FIRST line of your immune system is designed to keep out any sort of disease-causing ___ .

1. The FIRST line of your immune system is designed to keep out any sort of disease-causing agent   This is called a nonspecific defense.

• skin

• red blood cells

• mucous membrane

• white blood cells

1. If pathogens make it through the skin it causes ___.

1. If pathogens make it through the skin it causes inflammation.

2. *Identify the order of what happens in inflammation.)

• the capillaries (tiny blood vessels) allow more plasma to the area (the specific part of the blood that carries nutrients and other substances to fight infection)

• special white blood cells (macrophages) slip through the capillaries to attack antigens of foreign substances that cause infection.

• the blood vessels increase in size to supply more blood to the area (to help fight infection)

• the original cut/puncture is healed

Tags

NGSS.HS-LS1-3

Your body responds to an ​ (a)   that has filled your entire body by producing a ​ (b)   .  This higher temperature works to ​ (c)   the infection.

• infection
• fever
• blister
• slow down
• speed up

The body’s final line of defense is a group of special blood cells called ___ (T and B cells).

• red blood cells

• lymphocytes

• invader cells

• 

Reorder the order of how active immunity works to attack a pathogen:

• 1. After the pathogen is destroyed, the antibodies remain in the bloodstream to help in the case of future infections by the same type of pathogen.

• The macrophage identifies a foreign antigen and sends T cells to them

• 1. Other T cells alert B cells that foreign antigens have been found

• 1. Some T cells attack the foreign antigens

  2. Other T cells attack infected body cells

Identity the process of the immune response

a

b

c

d

e

T cells

B cells

pathogen

antibodies

microphage

Besides getting sick (and producing antibodies), another way to receive an active immunity is by getting a ___