هذا حل بعض الأسئلة الي مو محلولة ..
52. Which of the following contains oxygenated blood?
a. right atrium
b. superior vena cava
c. pulmonary arteries
d. left atrium
53 ------------------ is a specific blood cell that secretes antibodies.
a. a monocyte
b. a neutrophil
c. a lymphocyte
d. an eusinophil
ابغى اعرف الحل .؟!
54. The valve which prevents the backward flow of the blood from left ventricle to left atrium is called:
a. bicuspid valve
b. mitral valve
c. atrio-ventricular valve
d. all are correct
48. The low production of growth hormone during early childhood results in:
a. gigantism
b. dwarfism
c. increase in mitotic cell division
d. both a and c
49. Which of the following is true about the pancreas?
a. is a double gland
b. has alpha and beta cells
c. has islets of Langerhans
d. all of the above.
50. Pineal gland secretes:
a. calcitonin
b. melatonin
c. epinephrine
d. none of the above.
75 T F The endocrine system is made up of ductless glands which secrete hormones.
76 T F Steroid hormones cannot cross the plasma membrane of target cell.
84. T F Hypothalamus secretions stimulate the posterior pituitary lobe, but
have no effect on the anterior lobe.
أتوقع F
85. T F Calcium ions level of the blood affected by calcitonin and parathyroid
hormones.