Anatomy & Kinesiology Flashcards
7 cards from real CPI 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 & Kinesiology flashcards as text
Which muscle group is primarily responsible for flexing the hip, and can be strained when staff forcefully extend a combative person's leg?
Answer: Hip flexors (iliopsoas)
The iliopsoas and other hip flexors can be overstretched or strained when the hip is forced into rapid extension against muscle resistance.
During a two-person escort hold, staff walking on a person's right side should control which part of the body?
Answer: The person's right wrist and elbow on the same side
Each escort staff member controls the wrist and elbow on the same side as their position, maintaining a secure grip while allowing forward movement.
Compression of the axillary nerve, which wraps around the surgical neck of the humerus, can result in weakness of which movement?
Answer: Shoulder abduction and lateral rotation
The axillary nerve innervates the deltoid and teres minor muscles, so injury causes weakness in shoulder abduction and lateral rotation.
Which anatomical feature makes the knee joint particularly susceptible to lateral (valgus) stress injuries during standing restraint positions?
Answer: The knee primarily flexes and extends with limited lateral stability from bony architecture
The knee is a hinge joint relying heavily on ligaments (MCL, LCL, ACL, PCL) for lateral stability; valgus stress can tear the MCL or ACL.
Why is it important for crisis intervention staff to avoid applying pressure directly to the trachea?
Answer: Tracheal compression obstructs the airway and can rapidly cause asphyxia
The trachea is the main airway; direct compression collapses it and cuts off oxygen flow to the lungs, causing hypoxia and potential death within minutes.
The term 'kinesiology' as it applies to CPI training refers to which concept?
Answer: The study of human body movement and the mechanics of physical force
Kinesiology is the scientific study of human movement, including the biomechanics of how forces act on the body, directly informing safe physical intervention techniques.
When repositioning a person from a prone hold to a lateral recovery position, which physiological benefit is achieved?
Answer: Relief of weight on the chest restores normal respiratory mechanics
Moving to a lateral recovery position removes compressive forces from the thorax and diaphragm, allowing the person to breathe freely and reducing positional asphyxia risk.