In order to inhale, motor neurons stimulate the __________ to __________.
A. diaphragm; relax
B. diaphragm; contract
C. external intercostals; relax
D. internal intercostals; contract
Answer: B. diaphragm; contract
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Skin cancer is the _______ type of cancer, and due to sun exposure it occurs most frequently on the __________
A. most common; head and neck B. third most common; head and neck C. most common; hands and ears D. third most common; hands and ears
The epidermis of the skin serves as a barrier to mechanical stresses and protects us from microorganisms. What tissue do you think forms the epidermis?
A) stratified squamous epithelium B) simple columnar epithelium C) simple squamous epithelium D) pseudostratified columnar epithelium
Which of the following lists examples of body structures from the simplest to the most complex?
A. Mitochondrion, connective tissue, protein, stomach, adipocyte (fat cell) B. Protein, mitochondrion, adipocyte (fat cell), connective tissue, stomach C. Protein, adipocyte (fat cell), stomach, connective tissue, mitochondrion D. Protein, stomach, connective tissue, adipocyte (fat cell), mitochondrion E. Mitochondrion, connective tissue, stomach, protein, adipocyte (fat cell)
Regulation of extracellular K+ is not critical to body function because only about 2% of the total-body K+ is in the extracellular fluid
Indicate whether the statement is true or false.