This large, fan-shaped muscle of the upper chest is the prime mover of arm flexion.
pectoralis major
external oblique
serratus
anterior deltoid

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

Amoeba sisters video recap pedigrees