"Skeletal muscles" is the one <span>probable source of these muscles among the choices given in the question. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that you were looking for and it has come top your help.</span>
        
                    
             
        
        
        
Answer: A is the correct answer.
Explanation: If it is an EPSP, it increases the likelihood of an action potential. Therefore only A and C make sense. To fire an action potential, the neuron has to depolarize; therefore A is the correct answer. 
 
        
             
        
        
        
Answer:
 saliva is slightly acidic and helps break the food down it also allows it to have a easier time going down your throat 
Explanation:
saliva is acidic it coats the food in itself once it in your mouth Wich makes it easier to chew and swallow
 
        
                    
             
        
        
        
Answer:
1. When two bones join together and fuse so that no visible separation occurs, it is referred to as a(n) <u>synostosis,</u> or bony joint.
2. Bones that join together and are held in place with threads of collagen, form a joint that is called a(n) <u>synarthrosis</u>.
3. The most complex joints are called <u>synovial</u> joints. They display varying amounts of mobility.
4. Bones joined together with cartilage between the ends of the bones, form a joint called a(n)<u> amphiarthrosis</u>. 
Explanation:
The ossification of the connective tissue between two bones results in the fusion of them. As a result, now there is one bone instead of two. It's is called synostosis.
A synarthrosis is a joint that has very little or no movement at all. It has threads of collagen around them that keep the joint together.
A synovial joint is a diarthrosis joint. They have a wide range of mobility and are complex due to the number of components:
-  A fibrous joint capsule connected to the two bones.
- Synovial fluid to lubricate the joint.
- Articular cartilage on the bones' joint surfaces.
An Amphiarthrosis is a joint with limited mobility. This type of joint has fibrocartilage that connects the two bones. We can find it in the pubic synthesis.