Which of the following correctly differentiates the types of muscles based on the type of movement that they produce?

a: smooth is voluntary; skeletal and cardiac are involuntary
b: skeletal is voluntary; smooth and cardiac are involuntary
c: cardiac is voluntary; skeletal and smooth are involuntary
d: smooth, skeletal, and cardiac are all involuntary

remember skeletal is voluntary; smooth and cardiac are involuntary

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.