Exam 43: Muscles, Bones, and Body Movements

The most common type of lever system in the body has the force applied ____.

The flexor joints, the most moveable joints in the vertebrate skeleton, are lubricated by fluid that allows bones to slide easily as the joint moves.

Skeletal muscle cells have ____ and are controlled by the ____ nervous system.

Recent research has shown that myostatin can negatively regulate cardiac muscle growth.

When Ca²⁺diffuses into the cytoplasm of muscle cells and initiates the crossbridge cycle without a neurotransmitter trigger, the animal is most likely stressed .