If it was entrance, the shot came in the opposite direction JFK was facing at the time he was hit (forward & to the right).
If it was exit, it means the shot came from the rear.
The answer is YES.
Entrance wounds are smaller & neater while exit wounds are larger & messier.
This is because when a bullet enters the body it pushes material along with it & upon exit some material goes out creating a larger wound.
Dr. Jenkins recalled:
Doctors Charles Baxter, Malcolm Perry, & Robert McClelland arrived at the same time & began a tracheostomy...."
According to Dr. Jerry Balentine at MedicineNet.com:
We would expect the wound would not look EXACTLY as it did before the procedures were completed. That, however, might not be completely true.
The following statement is taken from www.insidetheaarb:
The throat wound was "clearly visible" both before & after emergency treatment & as Dr. Perry said, the "small injury" would be consistent with a wound of entrance.
The answer to Question to Ponder #3 is clearly that all the medical personnel at Parkland could not have been mistaken in their view that JFK's throat wound was an entrance wound.