Describe what it means if a muscle is striated and what it means if a muscle is said to be under voluntary control.

When a muscle is said to be striated it is striped and a muscle that is said to be under voluntary control is being able to move it on command / voluntary movement unlike involuntary movement.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

the tricuspid valve is present between right atrium and right ventricle