During passive expiration
a. diaphragm relaxes.
b. external intercostal muscles relax.
c. internal intercostals muscles relax.
d. two of these.
e. all of these.
D
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Which sequence indicates the correct pathway for blood in the arterial flow of the upper appendage?
A. Axillary artery - brachial artery - subclavian artery - ulnar artery B. Brachial artery - subclavian artery - axillary artery - radial artery C. Axillary artery - subclavian artery - radial artery - ulnar artery D. Subclavian artery - brachial artery - axillary artery - radial artery E. Subclavian artery - axillary artery - brachial artery - ulnar artery
The lingual __________ attaches the body of the tongue to the floor of the mouth.
Fill in the blank(s) with the appropriate word(s).
Perforating canals form transverse channels in bone tissue
Indicate whether the statement is true or false
During the development of lymphocytes, some pre-T and pre-B cells survive and develop into cells capable of an immune response; this is referred to as ________ selection. However, some cells are suppressed from responding to self antigens; this is referred to as ________ selection.
A. negative; neutral B. negative; positive C. neutral; positive D. neutral; negative E. positive; negative