Upper Body

• What is the surface of the hand and wrist called?

  Palmar surface
• What is the significance of the organization of palmar muscles?

  It allows for fine motor control in the hand
• What is the function of the transverse carpal ligament?

  It holds tendons in place
• How are the muscles in the palmar surface organized?

  • For grip
  • For flexion
  • For fine movements
• What are the two main groups of extrinsic hand muscles?

  Flexors and extensors
• Which muscle is mentioned that controls thumb movement?

  Abductor Pollicis Brevis
• What is the name of the muscle labeled "Opponens pollicis" in the image?

  Opponens pollicis
• What are the main muscles of the thumb shown in the image and what are their functions?

  • Flexor pollicis brevis: Flexes the thumb
  • Abductor pollicis brevis: Abducts the thumb
  • Opponens pollicis: Opposes the thumb
• What is the function of the transverse carpal ligament (flexor retinaculum)?

  • It holds the flexor tendons in place as they pass through the carpal tunnel
  • Helps stabilize the wrist and hand during movement
• Where are the hypothenar muscles located?

  At the base of the pinky
• What are the main muscles shown in the image and their functions?

  • Abductor digiti minimi: Abducts the little finger
  • Flexor digiti minimi brevis: Flexes the little finger
  • Opponens pollicis: Opposes the thumb
  • Adductor pollicis: Adducts the thumb
  • Flexor pollicis brevis: Flexes the thumb
  • Lumbricalis muscles: Flex the metacarpophalangeal joints and extend the interphalangeal joints
• What is the name of the muscle labeled as "Opponens pollicis"?

  Opponens pollicis
• What are the main muscles and ligaments labeled in the image?

  • Lumbrical muscles
  • Flexor carpi ulnaris
  • Abductor pollicis brevis
  • Transverse carpal ligament (flexor retinaculum)
• Where are flexors located?

  Anterior forearm
• What type of muscles are the deep-lying lumbrical muscles?

  They help finger bending
• What is the main action of extensors?

  Finger straightening
• What is the role of extrinsic hand muscles?

  They control larger movements of hand and fingers
• What is the location of hypothenar muscles?

  At the base of the little finger
• How do flexors and extensors work together in hand movements?

  • Flexors bend the fingers
  • Extensors straighten the fingers
  • They work in pairs for coordinated movements
• What is the name of the muscle labeled "Flexor pollicis brevis" in the image?

  Flexor pollicis brevis
• What is the function of the opponens pollicis?

  Rotates thumb towards fingers
• Where are the thenar muscles located?

  At the base of the thumb
• What is the main action of flexors?

  Finger bending
• What is the primary role of the hypothenar muscles?

  To enable precise pinky movements
• What is the name of the muscle labeled "Abductor pollicis brevis" in the image?

  Abductor pollicis brevis
• What is the function of the thenar muscles?

  Precise thumb movements
• What is the name of the muscle labeled "Flexor pollicis brevis" in the image?

  Flexor pollicis brevis
• What is the function of the flexor pollicis brevis?

  Bends thumb downwards
• What is the function of the hypothenar muscles?

  Precise pinky movements
• What is the name of the muscle labeled as "Flexor digiti minimi brevis"?

  Flexor digiti minimi brevis
• What are the main functions of the muscles shown in the image?

  • Abduction and flexion of the little finger
  • Flexion of the little finger
  • Adduction of the thumb
  • Opposition of the thumb
  • Flexion and abduction of the thumb
• What are the major muscle groups shown in the front view of the human body?

  • Shoulder: Deltoids (delts)
  • Front of upper arm: Biceps
  • Side: Obliques
  • Front of thigh: Quadriceps (quads)
  • Forearm: Wrist flexors
  • Stomach*: Abdominals (abs)
  • Calf: Ankle flexors
  • Chest: Pectorals (pecs)
• What is the name of the muscle labeled "Opponens pollicis" in the image?

  Opponens pollicis
• What is the name of the muscle labeled as "Abductor digiti minimi"?


  Abductor digiti minimi
• What muscle group is located on the front of the shoulder?

  Deltoids (delts)
• What is the name of the muscle labeled as "Abductor pollicis brevis"?


  Abductor pollicis brevis
• How do intrinsic hand muscles differ from extrinsic muscles?

  Intrinsic muscles are entirely within the hand
• How do extrinsic muscles contribute to grip?

  They work together for larger movements
• What happens when flexor muscles contract?

  Fingers bend while extensors relax
• How do the functions of extrinsic and intrinsic muscles complement each other?

  Extrinsic muscles enable movement, intrinsic control