The distal end of the ulna does not directly articulate with any of the carpal bones. Instead, the triquetrum bone articulates with what structure that spans the radius and ulna?

Correct answer: A fibrocartilaginous pad

Explanation

A key feature of the wrist joint (radiocarpal joint) is that the ulna does not directly participate. A fibrocartilaginous disc separates the head of the ulna from the carpal bones, specifically the triquetrum.

Other questions

Question 1

How many bones constitute the adult appendicular skeleton?

Question 2

Which two bones form the pectoral girdle?

Question 3

Which bony landmark is the hook-like process on the scapula that projects anteriorly?

Question 4

How many bones are found in each upper limb, including the arm, forearm, wrist, and hand?

Question 5

What is the name of the roughened, V-shaped region on the lateral side of the humerus shaft that serves as the attachment site for the deltoid muscle?

Question 6

Which structure of the ulna forms the bony tip of the elbow?

Question 7

How many carpal bones form the wrist and base of the hand?

Question 8

The pelvic girdle is formed by which single bone?

Question 9

Which three separate bones fuse during the late teenage years to form the adult hip bone?

Question 10

What is the name of the deep, cup-shaped cavity on the lateral side of the hip bone that forms the socket for the hip joint?

Question 11

Compared to the male pelvis, the subpubic angle in a female pelvis is typically:

Question 12

Which bone is the longest and strongest bone of the body?

Question 13

The patella is the largest example of which type of bone?

Question 14

The large bony bump found on the medial side of the ankle region is formed by which structure?

Question 15

Which tarsal bone is the most superior and articulates with the tibia and fibula to form the ankle joint?

Question 16

How many phalanx bones are contained in the toes of one foot?

Question 17

During embryonic development, what structure at the end of a limb bud stimulates the underlying mesenchyme to proliferate, producing limb outgrowth?

Question 18

Which bone of the appendicular skeleton develops via intramembranous ossification rather than endochondral ossification?

Question 19

According to the text, a complete dislocation of the acromioclavicular joint, where the acromion is thrust under the clavicle, is commonly known as what?

Question 20

The interosseous membrane of the forearm is a sheet of dense connective tissue that unites which two bones?

Question 21

What is the common name for the condition talipes, a congenital disorder causing the foot to be twisted inward at a sharp angle?

Question 22

The thumb (pollex) is composed of how many phalanx bones?

Question 23

The head of the femur articulates with which structure of the hip bone to form the hip joint?

Question 24

What is the name of the prominent bony extension on the anterior side of the hamate carpal bone?

Question 25

During development of the limbs, when does the upper limb bud first appear?

Question 26

What is the only bony articulation between the pectoral girdle and the axial skeleton?

Question 27

The lesser sciatic notch is a feature of which bone?

Question 28

Which condition involves a complete transverse fracture across the distal radius, resulting in a 'dinner fork' bend of the forearm?

Question 29

The roughened ridge that passes distally along the posterior side of the mid-femur and serves as an attachment site for multiple hip and thigh muscles is called the:

Question 30

What is the total number of tarsal bones that form the posterior half of the foot?

Question 31

During which week of embryonic development do the distal ends of the upper and lower limb buds expand and flatten into a paddle shape?

Question 32

The clavicle is the most commonly fractured bone in the body, with the break usually occurring between which two portions of the bone?

Question 33

Which part of the humerus articulates with the trochlear notch of the ulna to form the hinge part of the elbow joint?

Question 34

The Q-angle is a measure of how far the femur is angled laterally from the vertical line of the tibia. A larger Q-angle is a risk factor for patellofemoral syndrome and is typically found in:

Question 35

Which two bones are united by the coracoclavicular ligament, providing crucial indirect support for the acromioclavicular joint?

Question 36

The carpal tunnel is a passageway formed by the carpal bones and which strong ligament that spans the top of the U-shaped area?

Question 37

The pelvic brim, which separates the greater and lesser pelvis, is defined by a line formed by the pectineal line of the pubis, the arcuate line of the ilium, and which other two structures?

Question 38

Which tarsal bone is also known as the heel bone?

Question 39

Ossification of the clavicle is not complete until what age?

Question 40

What is the function of the lateral and medial epicondyles of the humerus?

Question 41

The bony pelvis is composed of the two hip bones, the sacrum, and which other bone?

Question 42

The head of the fibula articulates with which structure?

Question 43

Which carpal bone is small, rounded, and articulates with the anterior surface of the triquetrum bone?

Question 44

During embryonic development of the lower limb, a 90-degree medial rotation brings which digit to the medial side of the foot?

Question 45

The fossa on the scapula that is superior to the spine is known as the:

Question 46

What is the typical carrying angle of the forearm, which allows it to deviate laterally from the line of the arm?

Question 47

The pubic arch is a bony structure formed by the pubic symphysis, the bodies of the pubic bones, and which other structures?

Question 48

Which of the five metatarsal bones is the longest?

Question 49

The sternal end of the clavicle articulates with the manubrium, while the acromial end articulates with the: