PROFESSIONAL PRACTICE MATERIALS
Complete AST Practice Test
Prep | Guaranteed CST Exam
Pass
170+ (2026) 100% Correct Q&A with Rationales | Full Bank
Verified Answers Exam Ready With Rationales 175 Questions
DOCUMENT OVERVIEW
This document, "Complete AST Practice Test Prep | Guaranteed CST Exam Pass," covers
various anatomy, surgical procedures, and medical terminology topics including
dental anatomy, wound classification, ophthalmology, surgery techniques, and
sterilization methods. Each of the 175 questions comes with the correct answer and
detailed explanations, allowing students to review and understand the concepts without
additional effort. This comprehensive resource can be used by students to study, review,
and reinforce their knowledge, ultimately aiding in their exam preparation and CST
certification.
EXAM QUESTIONS
Q1. Which of the following structures is located in the alveolar processes?
A. Teeth
B. Villi
, C. Sinuses
D. Tonsils
CORRECT ANSWER
Teeth The teeth are located in the sockets of the alveolar processes of the
mandible and maxillae.
RATIONALE
The correct answer is "Teeth" because the alveolar processes are specific bony
projections on the mandible and maxillae that house the sockets where the teeth
are anchored. The other options, villi, sinuses, and tonsils, are unrelated to the
alveolar processes, with villi being associated with the small intestine, sinuses being
air-filled cavities in the skull, and tonsils being lymphoid organs in the throat.
Q2. What is the wound classification for a bronchoscopy?
A. Clean
B. Contaminated
C. Dirty and infected
D. Clean-contaminated
CORRECT ANSWER
Clean-contaminated
RATIONALE
A bronchoscopy involves entering the airways, which are not a sterile environment,
and the procedure may introduce normal flora into the wound site. Therefore, the
wound classification for a bronchoscopy should reflect the potential introduction of
, non-pathogenic but normal flora, making "Clean-contaminated" the correct answer
as it indicates the presence of non-pathogenic contaminants.
Q3. The enzyme used to soften the zonules of the lens before cataract surgery is:
A. Atropine sulfate
B. Alpha-chymotrypsin
C. Acetylcholine chloride
D. Pilocarpine hydrochloride
CORRECT ANSWER
Alpha-chymotrypsin
RATIONALE
Alpha-chymotrypsin is used to soften the zonules of the lens before cataract
surgery because it is a proteolytic enzyme that breaks down the protein fibers in the
zonules, allowing for easier manipulation and removal of the lens. This process is
crucial in cataract surgery to prevent damage to surrounding tissues and ensure a
smooth surgical procedure.
Q4. How should the stretcher be oriented when necessary to use an elevator to
transport a patient to the OR?
A. Place stretcher sideways in elevator
B. Enter head first, exit feet first
C. Position in elevant is irrelevant
D. Enter feet first, exit head first
CORRECT ANSWER
Enter head first, exit feet first
, RATIONALE
The correct orientation allows for a clear escape route in case of an emergency,
prioritizing the patient's safety by enabling medical staff to quickly exit the elevator
without obstructing the patient. By entering and exiting the elevator head first, staff
can easily step over the patient if needed, ensuring a swift and secure evacuation
process.
Q5. Which of the following is a curved, transverse incision across the lower abdomen
frequently used in gynecological surgery?
A. Midline
B. Paramedian
C. McBurney's
D. Pfannenstiel
CORRECT ANSWER
Pfannenstiel
RATIONALE
The Pfannenstiel incision is correct because it is a type of low transverse incision
that allows for easy closure of the abdominal wall, reducing the risk of wound
complications and promoting faster recovery in gynecological surgery. This curved
incision, typically located just above the pubic hairline, is commonly used in
cesarean sections and other gynecological procedures to minimize scarring and
facilitate healing.
Q6. When perforated metal trays are placed on the shelves of the steam sterilizing
cart, they should be positioned how?
A. Flat
B. Upside down
C. Vertical
D. Angled
Complete AST Practice Test
Prep | Guaranteed CST Exam
Pass
170+ (2026) 100% Correct Q&A with Rationales | Full Bank
Verified Answers Exam Ready With Rationales 175 Questions
DOCUMENT OVERVIEW
This document, "Complete AST Practice Test Prep | Guaranteed CST Exam Pass," covers
various anatomy, surgical procedures, and medical terminology topics including
dental anatomy, wound classification, ophthalmology, surgery techniques, and
sterilization methods. Each of the 175 questions comes with the correct answer and
detailed explanations, allowing students to review and understand the concepts without
additional effort. This comprehensive resource can be used by students to study, review,
and reinforce their knowledge, ultimately aiding in their exam preparation and CST
certification.
EXAM QUESTIONS
Q1. Which of the following structures is located in the alveolar processes?
A. Teeth
B. Villi
, C. Sinuses
D. Tonsils
CORRECT ANSWER
Teeth The teeth are located in the sockets of the alveolar processes of the
mandible and maxillae.
RATIONALE
The correct answer is "Teeth" because the alveolar processes are specific bony
projections on the mandible and maxillae that house the sockets where the teeth
are anchored. The other options, villi, sinuses, and tonsils, are unrelated to the
alveolar processes, with villi being associated with the small intestine, sinuses being
air-filled cavities in the skull, and tonsils being lymphoid organs in the throat.
Q2. What is the wound classification for a bronchoscopy?
A. Clean
B. Contaminated
C. Dirty and infected
D. Clean-contaminated
CORRECT ANSWER
Clean-contaminated
RATIONALE
A bronchoscopy involves entering the airways, which are not a sterile environment,
and the procedure may introduce normal flora into the wound site. Therefore, the
wound classification for a bronchoscopy should reflect the potential introduction of
, non-pathogenic but normal flora, making "Clean-contaminated" the correct answer
as it indicates the presence of non-pathogenic contaminants.
Q3. The enzyme used to soften the zonules of the lens before cataract surgery is:
A. Atropine sulfate
B. Alpha-chymotrypsin
C. Acetylcholine chloride
D. Pilocarpine hydrochloride
CORRECT ANSWER
Alpha-chymotrypsin
RATIONALE
Alpha-chymotrypsin is used to soften the zonules of the lens before cataract
surgery because it is a proteolytic enzyme that breaks down the protein fibers in the
zonules, allowing for easier manipulation and removal of the lens. This process is
crucial in cataract surgery to prevent damage to surrounding tissues and ensure a
smooth surgical procedure.
Q4. How should the stretcher be oriented when necessary to use an elevator to
transport a patient to the OR?
A. Place stretcher sideways in elevator
B. Enter head first, exit feet first
C. Position in elevant is irrelevant
D. Enter feet first, exit head first
CORRECT ANSWER
Enter head first, exit feet first
, RATIONALE
The correct orientation allows for a clear escape route in case of an emergency,
prioritizing the patient's safety by enabling medical staff to quickly exit the elevator
without obstructing the patient. By entering and exiting the elevator head first, staff
can easily step over the patient if needed, ensuring a swift and secure evacuation
process.
Q5. Which of the following is a curved, transverse incision across the lower abdomen
frequently used in gynecological surgery?
A. Midline
B. Paramedian
C. McBurney's
D. Pfannenstiel
CORRECT ANSWER
Pfannenstiel
RATIONALE
The Pfannenstiel incision is correct because it is a type of low transverse incision
that allows for easy closure of the abdominal wall, reducing the risk of wound
complications and promoting faster recovery in gynecological surgery. This curved
incision, typically located just above the pubic hairline, is commonly used in
cesarean sections and other gynecological procedures to minimize scarring and
facilitate healing.
Q6. When perforated metal trays are placed on the shelves of the steam sterilizing
cart, they should be positioned how?
A. Flat
B. Upside down
C. Vertical
D. Angled
