The terminal cisternae releases calcium ion
The terminal cisternae act as calcium storage sites. The calcium ions stored in the terminal cisternae are essential in muscle contraction. The calcium release unit of muscle consists of terminal cisternae of the sarcoplasmic reticulum and it is adjacent transverse or T- tubule that is the invaginated part of the surface membrane.
#1. The maintenance of an organism's internal environment within certain limits
#2, im not sure i completely understand the answer choices..
The concept that is shown by the relationship between the Oahu Amakihi and the Kauai Amakihi is competitive exclusion.
