The muscle of the back of the neck and upper trunk that controls shoulder movements is the: - ANSWER--trapezius The transformation or change in genes which often results in growth pattern changes in cells is called: - ANSWER--mutation the hormone secreted by the pituitary gland that stimulates breast development and milk production is: - ANSWER--Luteinizing hormone (LH) The process by which the lens and pupil adjust to focus light rays on the retina is - ANSWER--accommodation Lymphocytes that form and mature in the one marrow are called - ANSWER--B-cells the layer of peritoneum that attaches to the posterior wall of the abdominal cavity and attaches the small intestine is the - ANSWER--mesentery A fontanelle is the - ANSWER--soft spot on an infants head the type of tissue that covers both the internal and external surfaces of the body is the - ANSWERepithelialan opening in a bone through which blood vessels, nerves and ligaments pass is a/n - ANSWER--foramen a throbbing pulsation of the heart is - ANSWER--palpitation an important part of the immune system that produces both lymphocytes and monocytes is the - ANSWER--spleen the act of drawing a foreign substance into the upper respiratory tract is called - ANSWER--aspiration