Name two ways in which the fetal skull differs from the adult skull. A certain short-day plant flowers only when days are less than 12 hours long. Which of the following would cause it to flower?

a. A 9-hour night and 15-hour day with 1 minute of darkness after 7 hours

b. An 8-hour day and 16-hour night with a flash of white light after 8 hours

c. A 13-hour night and 11-hour day with 1 minute of darkness after 6 hours

d. A 12-hour day and 12-hour night with a flash of red light after 6 hours

Name the bones of the shoulder girdle.

Name all the bones with which the ulna articulates.

What bones make up each hip bone (coxal bone)? Which of these is the largest?

Which has tuberosities that we sit on?

Which is the most anterior?

Compare the amount of movement possible in synarthrotic, amphiarthrotic, and diarthrotic joints. Relate these terms to the structural classification of joints—that is, to fibrous, cartilaginous, and synovial joints.

Deborah, a 75-year-old woman, stumbled slightly while walking, then felt a terrible pain in her left hip. At the hospital, X-ray images revealed that the hip was broken. Also, the compact bone and spongy bone throughout her spine were very thin. What was her probable condition?

At work, a box fell from a shelf onto Ella's acromial region. In the emergency room, the physician felt that the head of her humerus had moved into the axilla. What had happened to Ella?

Ryan, a 6-year-old child who is allergic to milk, has extremely bowed legs. What condition do you suspect, and what is the connection to not drinking milk?