(A&P) Arms, Wrists & Hands Flashcards
What are the three primary bones in the arm?
Humerus, radius, and ulna.
What is the function of the carpals?
They form the wrist and allow for its range of motion.
How many phalanges are in each hand?
14 phalanges, including three in each finger and two in the thumb.
Describe the role of the metacarpals.
They form the framework of the palm of the hand.
What is the brachial artery’s function?
It supplies blood to the upper arm, branching into the ulnar and radial arteries.
How do the radial and ulnar arteries support hand circulation?
They supply blood to the forearm and fingers.
What are the main veins in the arms and hands?
Cephalic, basilic, and median veins.
How do the digital arteries function in the hand?
They supply blood to the fingers.
What is the role of the carpal tunnel in the wrist?
It houses and protects the median nerve and flexor tendons.
How does the circulatory system in the arms and hands respond to temperature changes?
Blood vessels constrict or dilate to regulate body temperature.
What is the importance of the venous network in the hands and arms?
It helps in returning deoxygenated blood back to the heart.
