It is beneficial for cells to die in a programmed manner rather than simply break open.  

One word answer.  Programmed cell death is referred to as: 

Lead III is between the _______.

Identify the atrioventricular sulcus in the heart specimen. (some pins are next to an opening to be identified)

The coronary sinus empties into the _______.

The P wave is an indication of __________.

Identify the pericardial cavity. 

Normal heart rate is average at about 75 beats per minute.

Antibodies are found ______.

Identify the atrioventricular sulcus in the heart specimen. (some pins are next to an opening to be identified)