Which of the Following Statements Regarding the Muscularis Externa of the Esophagus

question 62

Multiple Choice

Which of the following statements regarding the muscularis externa of the esophagus is true?

• A) The upper third portion of the esophagus consists of smooth muscle, the middle third portion is a mixture of smooth and skeletal muscles, and the lower third consists of skeletal muscle.
• B) The entire muscularis of the esophagus consists of skeletal muscle only.
• C) The entire muscularis of the esophagus consists of smooth muscle only.
• D) The upper third portion of the esophagus consists of smooth muscle, and the remaining portion is a mixture of skeletal and smooth muscles.
• E) The upper third portion of the esophagus consists of skeletal muscle, the middle third portion is a mixture of skeletal and smooth muscles, and the lower third consists of smooth muscle.

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Definitions:

Parent-Child Interactions

The dynamic relationship between a parent and child characterized by communication, caregiving, and nurturing behaviors.

Family Structure

The composition and organization of a family unit, including the members and their roles.

Family Harmony

The state of peaceful and positive interaction among family members, often considered vital for the emotional stability and happiness of individuals.

Family Resilience

The ability of a family to respond to and eventually adapt to the challenges and setbacks they face.