What kind of model there is many kinds
        
                    
             
        
        
        
The mitochondrion is a membrane-bound organelle that provides energy by ATP synthesis (oxidative phosphorylation)
The lysosome contains about 40 hydrolytic enzymes that help with cellular digestion.
The Golgi apparatus plays an important role in the excretion and packaging of vesicles.
 
        
             
        
        
        
Explanation:
A-Oral Cavity
B-Mouth
C-Pharynx
D-Oesophagus
E-Lever
F-Stomach
G- Gallbladder
H- Doudenum
I- Large Intestine
J- Small intestine
K- Appendix
L- Rectum
M-Anus
 
The function performed in F is that,it mixes the food thoroughly with more digestive juices.
The function performed in M is that ,it allows the control of stool.
 
        
             
        
        
        
D) The AV valves are supported by chordae tendineae so that they do not blow back up into the atria during ventricular contraction.
        
             
        
        
        
Answer:
the answer is d ig........