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Questions and Answers
During the 4th week of intrauterine life, a pair of small elevations known as limb buds appear on the ventrolateral aspect of the embryo. Where do the anterior pair of upper limb buds appear?
During the 4th week of intrauterine life, a pair of small elevations known as limb buds appear on the ventrolateral aspect of the embryo. Where do the anterior pair of upper limb buds appear?
- Opposite the lumbar and upper sacral segments
- Opposite the lower cervical segments (correct)
- At the lumbar and upper sacral segments
- At the lower cervical segments
Why are the upper and lower limbs initially described as flipper-like appendages during an early stage of development?
Why are the upper and lower limbs initially described as flipper-like appendages during an early stage of development?
- They have preaxial and postaxial borders (correct)
- They have proximal, middle, and distal segments
- They have similar dorsal and ventral surfaces
- They have the same number of fingers and toes
What is the homologous part of the upper limb to the thigh in the lower limb?
What is the homologous part of the upper limb to the thigh in the lower limb?
- Elbow joint
- Shoulder/pectoral girdle
- Forearm
- Arm (correct)
Where do the posterior pair of lower limb buds appear during limb development?
Where do the posterior pair of lower limb buds appear during limb development?
What is the homologous part of the upper limb to the hip joint in the lower limb?
What is the homologous part of the upper limb to the hip joint in the lower limb?
What defines the preaxial border of both upper and lower limbs during early development?
What defines the preaxial border of both upper and lower limbs during early development?
How many metacarpal bones are in the hand?
How many metacarpal bones are in the hand?
What is the numbering order of the metacarpal bones from lateral to medial side?
What is the numbering order of the metacarpal bones from lateral to medial side?
Which part of the hand do metacarpophalangeal joints connect?
Which part of the hand do metacarpophalangeal joints connect?
What makes the first carpometacarpal joint unique in terms of movements?
What makes the first carpometacarpal joint unique in terms of movements?
How many digits are in the hand (excluding the thumb)?
How many digits are in the hand (excluding the thumb)?
Which limb part attaches the limb to the trunk?
Which limb part attaches the limb to the trunk?
