CHT - ANATOMY questions and answers A+ Grade 2026\2027
Diaphysis
- correct answer Shaft/Central portion of a long bone
Metaphysis
- correct answer Region where the epiphysis joints the diaphysis. Growing bone that corresponds to the
calcified layer of the epiphyseal plate
Epiphysis
- correct answer End of the long bone, initially growing separate from the shaft
palmar aponeurosis
- correct answer Central part of the deep fascia of the palm
What are the muscles within the thenar eminence?
- correct answer 1. Abductor Pollicis Brevis
2. Flexor Pollicis Brevis
3. Adductor Pollicis
What nerve supplies the thenar compartment?
- correct answer recurrent branch of median nerve
What are the muscles within the hypothenar emiennce?
- correct answer 1. Abductor Digiti Minimi
2. Flexor Digit Minimi
3. Opponens Digiti Minimi
What nerve innervates the hypothenar eminence?
- correct answer ulnar
,What are the lumbricals?
- correct answer Deep 4 muscles Located in the palm of the hand that arise from tendons if flexor
digitroum profundus
What is the action of the lumbricals in the hand?
- correct answer Flexion of MP, extension PIP/DIP
What nerve innervates the lumbricals?
- correct answer Two ulnar muscles supplied by the ulnar nerve, two radial muscles are supplied by the
median nerve,
What are interossei
- correct answer muscles between the metacarpals (bones)
involved in adduction and abduction of the fingers
palmar and dorsal. They also assist w/ MP flexion, and PIP/DIP extension
How many palmar interossei? How many dorsal?
- correct answer 3 palmar, 4 dorsal
What is the action of the palmar interossei
- correct answer adduction
What is the action of the dorsal interossei
- correct answer abduction
What nerve innervates the interossei?
- correct answer deep branch of ulnar nerve **note this is different from the lumbricals**
What are annular ligaments?
- correct answer Ligaments that support and hold tendons in place. they are transversely oriented fibers.
They are important as they prevent bowstringing
, How many annular pulleys are there? Where are they located?
- correct answer There are 5
A1: MP
A2: P1
A3: PIP
A4: P2
A5: DIP
Which annular pulleys are the most important?
- correct answer A2 and A4
What are cruciform ligaments?
- correct answer obliquely oriented fibers. also numbered proximal to distal
How many cruciate ligaments are there? Where are they located?
- correct answer Three.
1. P1 to PIP
2. PIP to P2
3. P2 to DIP volar plate
How many synovial tendon sheaths are there? What are they?
- correct answer 5 in total
-ulnar bursa
-radial bursa
-three separate digital synovial sheaths
Which tendons define the anatomical snuffbox?
- correct answer APL, EPB, EPL
What are the main flexor forces at the MP/PIP/DIP joint?
- correct answer MP: Lumbricals/Interossei
Diaphysis
- correct answer Shaft/Central portion of a long bone
Metaphysis
- correct answer Region where the epiphysis joints the diaphysis. Growing bone that corresponds to the
calcified layer of the epiphyseal plate
Epiphysis
- correct answer End of the long bone, initially growing separate from the shaft
palmar aponeurosis
- correct answer Central part of the deep fascia of the palm
What are the muscles within the thenar eminence?
- correct answer 1. Abductor Pollicis Brevis
2. Flexor Pollicis Brevis
3. Adductor Pollicis
What nerve supplies the thenar compartment?
- correct answer recurrent branch of median nerve
What are the muscles within the hypothenar emiennce?
- correct answer 1. Abductor Digiti Minimi
2. Flexor Digit Minimi
3. Opponens Digiti Minimi
What nerve innervates the hypothenar eminence?
- correct answer ulnar
,What are the lumbricals?
- correct answer Deep 4 muscles Located in the palm of the hand that arise from tendons if flexor
digitroum profundus
What is the action of the lumbricals in the hand?
- correct answer Flexion of MP, extension PIP/DIP
What nerve innervates the lumbricals?
- correct answer Two ulnar muscles supplied by the ulnar nerve, two radial muscles are supplied by the
median nerve,
What are interossei
- correct answer muscles between the metacarpals (bones)
involved in adduction and abduction of the fingers
palmar and dorsal. They also assist w/ MP flexion, and PIP/DIP extension
How many palmar interossei? How many dorsal?
- correct answer 3 palmar, 4 dorsal
What is the action of the palmar interossei
- correct answer adduction
What is the action of the dorsal interossei
- correct answer abduction
What nerve innervates the interossei?
- correct answer deep branch of ulnar nerve **note this is different from the lumbricals**
What are annular ligaments?
- correct answer Ligaments that support and hold tendons in place. they are transversely oriented fibers.
They are important as they prevent bowstringing
, How many annular pulleys are there? Where are they located?
- correct answer There are 5
A1: MP
A2: P1
A3: PIP
A4: P2
A5: DIP
Which annular pulleys are the most important?
- correct answer A2 and A4
What are cruciform ligaments?
- correct answer obliquely oriented fibers. also numbered proximal to distal
How many cruciate ligaments are there? Where are they located?
- correct answer Three.
1. P1 to PIP
2. PIP to P2
3. P2 to DIP volar plate
How many synovial tendon sheaths are there? What are they?
- correct answer 5 in total
-ulnar bursa
-radial bursa
-three separate digital synovial sheaths
Which tendons define the anatomical snuffbox?
- correct answer APL, EPB, EPL
What are the main flexor forces at the MP/PIP/DIP joint?
- correct answer MP: Lumbricals/Interossei
