4. What body systems are described in the concept map below? Gland
secretes
Hormone
Transported
by blood
Body responds and
changes
A. Circulatory and excretory
B. Endocrine and circulatory
C. Excretory and endocrine
D. Respiratory and excretory

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

answer; (a) medicalized;