Anatomy and Kinesiology Flashcards
7 cards from real NCBTMB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Anatomy and Kinesiology flashcards as text
Which layer of the skin contains the keratinocytes undergoing active mitosis?
Answer: Stratum basale
The stratum basale (basal layer) contains mitotically active keratinocytes that continuously replenish the upper skin layers.
The brachial plexus is formed from which spinal cord levels?
Answer: C5–T1
The brachial plexus originates from ventral rami of C5 through T1 and provides all motor and sensory innervation to the upper extremity.
During the stance phase of gait, which muscle prevents the pelvis from dropping on the swing-leg side?
Answer: Gluteus medius
The gluteus medius on the stance-leg side contracts eccentrically to stabilize the pelvis and prevent a contralateral Trendelenburg drop.
Which spinal curve is considered a primary curve present at birth?
Answer: Thoracic kyphosis
The thoracic and sacral kyphotic curves are primary curves present from fetal development, while cervical and lumbar lordoses develop postnatally.
The rotator cuff is composed of which four muscles?
Answer: Supraspinatus, infraspinatus, teres minor, subscapularis
The rotator cuff consists of supraspinatus, infraspinatus, teres minor, and subscapularis, remembered by the mnemonic SITS.
Which type of cartilage is found in intervertebral discs?
Answer: Fibrocartilage
Fibrocartilage is found in intervertebral discs, the pubic symphysis, and the menisci; it withstands both compressive and tensile forces.
Eversion of the foot is primarily performed by which muscles?
Answer: Peroneus longus and peroneus brevis
The peroneus (fibularis) longus and brevis, located in the lateral compartment of the leg, are the primary evertors of the foot.