Hydrogen bonds are very strong bonds that hold together water molecules.
Indicate whether the statement is true or false
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Question 2) The ________ cover(s) the superior portion of the heart and produces a group of hormones known as ________.
A) spleen; splenogins
B) pancreas; pancreatins
C) inguinal lymph nodes; lymph
D) thymus; thymosins
(
Question 3) The four most common elements in the human body are oxygen, carbon, nitrogen, and hydrogen.
Indicate whether the statement is true or false
(
Question 4) The ________ are lymphoid tissues located in and around the pharynx.
A) ducts
B) tonsils
C) lymphatic vessels
D) lymph nodes
(
Question 5) Inorganic compounds lack carbon and tend to be small, simple molecules.
Indicate whether the statement is true or false
(
Question 6) The role of the tonsils is to ________.
A) protect the upper respiratory and digestive tracts from infections
B) produce new lymphocytes
C) secrete thymosins
D) filter lymph before it is returned to the venous circulation
(
Question 7) Atoms that have lost or gained electrons during chemical bonding are known as isotopes.
Indicate whether the statement is true or false
(
Question 8) New lymphocytes are produced in the ________ of a lymph node.
A) cortex
B) medulla
C) germinal center
D) medullary cords
(
Question 9) The number of protons in an atom equals the atomic number for that element.
Indicate whether the statement is true or false
(
Question 10) White and red pulp are functional components of the ________.
A) thymus
B) lymphatic nodules
C) spleen
D) lymph nodes
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