BIOL 251 A&P Exam 1; Portage Learning
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT RATED A+ ||UPDATED 2025
1. Surfactant
Answer ✔✔ d. helps prevent the alveoli from collapsing
Explanation:
Surfactant is a substance secreted by type II alveolar cells in the lungs. Its
primary function is to reduce surface tension in the alveoli, preventing them
from collapsing and allowing for easier gas exchange. It is essential for lung
function, especially during exhalation when the alveoli would otherwise
collapse due to surface tension.
2. The portion of the pharynx that receives both air and food is the:
Answer ✔✔ b. oropharynx
Explanation:
The oropharynx is the part of the pharynx that lies behind the oral cavity
and serves as a passageway for both air (to the larynx) and food (to the
esophagus).
The nasopharynx is the portion that serves only the respiratory function,
directing air to the larynx.
The laryngopharynx also serves both food and air, but its role is more
focused on guiding food toward the esophagus and air toward the larynx.
Levels of organization -ANSWER✔✔(AMMO C TOO) atom, molecule,
macromolecule, organelle, cell, tissue, organ, organ system, organism
, toward the back of the body -ANSWER✔✔dorsal
toward the upper part of a structure -ANSWER✔✔superior
away from the head end -ANSWER✔✔inferior (caudal)
closer to the point of attachment of a limb -ANSWER✔✔proximal
Are the arms part of the axial or appendicular region of the body? -
ANSWER✔✔Appendicular
Appendicular -ANSWER✔✔he body consists of the appendages or limbs that are
attached to axis of the body as well as the pelvic and pectoral (shoulder) girdles
that serve as a point of attachment.
Axial -ANSWER✔✔includes the head, neck, and trunk
Extension -ANSWER✔✔opening of a joint, "straightening"
A patient is standing with his hand covering his mouth. He returns his hand to his
side, moving into anatomical position. What anatomical action term is best used to
indicate the motion occurring at his elbow? -ANSWER✔✔Extension
Abduction -ANSWER✔✔movement away from midline
QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS 100%
CORRECT RATED A+ ||UPDATED 2025
1. Surfactant
Answer ✔✔ d. helps prevent the alveoli from collapsing
Explanation:
Surfactant is a substance secreted by type II alveolar cells in the lungs. Its
primary function is to reduce surface tension in the alveoli, preventing them
from collapsing and allowing for easier gas exchange. It is essential for lung
function, especially during exhalation when the alveoli would otherwise
collapse due to surface tension.
2. The portion of the pharynx that receives both air and food is the:
Answer ✔✔ b. oropharynx
Explanation:
The oropharynx is the part of the pharynx that lies behind the oral cavity
and serves as a passageway for both air (to the larynx) and food (to the
esophagus).
The nasopharynx is the portion that serves only the respiratory function,
directing air to the larynx.
The laryngopharynx also serves both food and air, but its role is more
focused on guiding food toward the esophagus and air toward the larynx.
Levels of organization -ANSWER✔✔(AMMO C TOO) atom, molecule,
macromolecule, organelle, cell, tissue, organ, organ system, organism
, toward the back of the body -ANSWER✔✔dorsal
toward the upper part of a structure -ANSWER✔✔superior
away from the head end -ANSWER✔✔inferior (caudal)
closer to the point of attachment of a limb -ANSWER✔✔proximal
Are the arms part of the axial or appendicular region of the body? -
ANSWER✔✔Appendicular
Appendicular -ANSWER✔✔he body consists of the appendages or limbs that are
attached to axis of the body as well as the pelvic and pectoral (shoulder) girdles
that serve as a point of attachment.
Axial -ANSWER✔✔includes the head, neck, and trunk
Extension -ANSWER✔✔opening of a joint, "straightening"
A patient is standing with his hand covering his mouth. He returns his hand to his
side, moving into anatomical position. What anatomical action term is best used to
indicate the motion occurring at his elbow? -ANSWER✔✔Extension
Abduction -ANSWER✔✔movement away from midline
