In the example of childbirth the uterus contracts.  This pushes the baby’s head against the cervix.  Nerve endings in the cervix send a message to the brain that this is happening.  The brain secretes oxytocin.  Oxytocin stimulates the uterus to contract again and the baby’s head pushes even harder against the cervix.  Oxytocin is an example of:

The muscle on the anterior side of the tibia is the:

What kind of neuron would cause a muscle to contract?

The type of tissue that forms ligaments, tendons, blood, and cartilage is:

The thumb is lateral to the pinky finger.

The bones in the palm of your hand are the:

Which part of the brain is responsible for logical, organized, higher-level thinking?

What structure is superior to the stomach?

The bone in the upper arm is the:

The type of cell that builds bone tissue is called: