Exam 21: Human Sex Differences: Endocrine, Skeletal, and Muscular Systems

You (assume you are male) were told by your mom not to wear tight briefs, as this could make you sterile and infertile. What did she mean by this statement?

True or false: In general, the first signs of puberty occur earlier in life for girls than for boys.

Into what units are the myofibrils of skeletal muscle organized?

True or false: Steroid-based hormones are able to move across cell membranes easily because they are water soluble.

Which type of muscle in humans is involved in voluntary body movements?

Why do sex hormones and other steroids take much longer to produce their effects than nonsteroid hormones do?

How does growth during puberty affect the differences in male and female skeletons?

You're treating a patient who experienced a fracture to her appendicular skeleton. Which bone would need to be treated?

Which system is an internal system of regulation and communication involving hormones, glands, and target cells?

Label the parts of the human skeleton.

Mary is a long-distance runner and trains regularly. Recently, Mary and her husband have unsuccessfully tried to conceive a child. To improve her chances of getting pregnant, why does her doctor suggest that she should stop training?

Which endocrine glands are involved in calcium homeostasis?

If healthy men have a range of body fat from 3 to 29% and healthy women have a range of body fat from 12 to 32%, what would you predict for the sex of an individual having 20% body fat?

A tumor in an endocrine gland caused Jane to have weakened bones and unusually high levels of blood calcium. Which gland was affected?

What type of muscle fibers will be found in large percentages in the leg muscles of a person who excels at weight lifting but does not do well at running marathons?

Which endocrine gland is involved in producing immune cells?

Without the protein myosin, what structures would also be missing in a muscle?

What happens to a sarcomere when muscle contraction occurs?

True or false: The larger muscle fibers found in males account for the fact that males tend to be, on average, stronger than females.

True or false: Studies have shown that a woman's life expectancy is diminished due to menstruation.