Proteins found on the outside of cells and viruses are called ____________ , these are used by the body to _______________ pathogens.
antigens; help
antibodies; make
antigens; identify
antibodies; reproduce
Identify the response below that summarizes the correct sequence of events occurring as we breathe in.
Air pressure drops; rib cage moves in and down; diaphragm becomes dome-shaped; air rushes in.
Rib cage moves up and out; diaphragm flattens; chest cavity space increases; air pressure in the lungs drops.
Rib cage moves up and out; air rushes in; air pressure drops; diaphragm flattens.
Rib cage moves down and in; air pressure drops; diaphragm flattens; air rushes in.
Please help I do not know these!
Please help ASAP!
antigens; identify
I think
Rib cage moves up and out; diaphragm flattens; chest cavity space increases; air pressure in the lungs drops.
But I am not sure!!!!!!!!
Yup!
The correct answers are:
1. Antigens; identify: Proteins found on the outside of cells and viruses are called antigens. These antigens are used by the body to identify pathogens.
2. Rib cage moves up and out; diaphragm flattens; chest cavity space increases; air pressure in the lungs drops: This response summarizes the correct sequence of events occurring as we breathe in. When we inhale, the rib cage moves up and out, the diaphragm flattens, which increases the space in the chest cavity, and this causes the air pressure in the lungs to drop. As a result, air rushes into the lungs.