articulation

Examples of articulation in the following topics:

• Tibia and Fibula (The Leg)

  • The tibia and the smaller fibula bones comprise the lower leg and articulate at the knee and ankle.
  • It widens and forms two condyles—the lateral and medial—that articulate with the condyles of the femur.
  • The medial malleolus is a bony projection that articulates with the tarsal bones to form the ankle joint.
  • Laterally, there is the fibular notch that articulates with the fibula.
  • It also articulates with the tarsal bones to form the ankle joint.

• Ulna and Radius (The Forearm)

  • The forearm contains two bones—the radius and the ulna—that extend in parallel from the elbow, where they articulate with the humerus to the wrist, where they articulate with the carpals.
  • The cornoid process, together with the olecranon, forms the trochlear notch where it articulates with the trochlea of the humerus.
  • Laterally to the trochlear notch lies the radial notch, which articulates with the head of the radius to form the proximal radioulnar joint.
  • Distally the radius expands, medially the ulnar notch articulates with the head of the ulnar.
  • Immediately adjacent to the ulnar notch, the radius articulates with the scaphoid and lunate carpal bones to form part of the wrist.

• Carpals, Metacarpals, and Phalanges (The Hand)

  • The scaphoid and lunate articulate with the radius, and the lunate and triquetrum articulate with the articular disk of the wrist.
  • The trapezium articulates with the scaphoid proximally and the first, thumb, and second metacarpal distally.
  • The trapezoid articulates with the scaphoid proximally and the second metacarpal distally.
  • The capitate articulates with the scaphoid and lunate proximally and the third and fourth metacarpal.
  • The hand contains five metacarpal bones that articulate proximally with the carpals and distally with the proximal phalanges.

• Structures Used in Voice Production

  • The articulation of consonants occurs at a point of either active or passive articulation, which is a place in the vocal tract where an obstruction stops the sound.
  • The passive place of articulation is the place on the more stationary part of the vocal tract where the articulation occurs.
  • Passive places of articulation include:
  • Active places of articulation include:
  • Places of articulation (active and passive): 1.

• Humerus (The Upper Arm)

  • Proximally it articulates with the scapula to form the shoulder joint, or glenohumeral joint.
  • Distally, the humerus articulates with the radius and ulna to form the elbow joint.
  • Distally, the humerus flattens to articulate with the ulna and radius at the elbow joint.
  • The medially located trochlea articulates with the ulna.
  • Located laterally to this is the capitulum that articulates with the radius.

• Tarsals, Metatarsals, and Phalanges (The Foot)

  • The proximal row contains the talus, which is the most superior of the tarsals and articulates with the tibia and fibula to form the ankle joint.
  • It articulates with the talus superiorly and anteriorly with the cuboid of the distal group.
  • The intermediate group contains only the navicular bone, which articulates with all of the tarsals—with the exception of the calcaneus.
  • The distal tarsals articulate with the metatarsals and also maintain the transverse arch of the foot.
  • The proximal base articulates with the cuboid bones, and distally with the proximal phalanges, and each metatarsal also articulates laterally with adjacent metatarsals.

• Parts of a Vertebra

  • When articulated together the vertebrae form a strong yet flexible structure that encloses the vertebral foramen, or opening, where the spinal cord sits.
  • It also provides a base for numerous muscle attachments and articulations with other bones.
  • The anterior vertebral body which is the point of articulation between the vertebrae.
  • They interact with the zyhapophysis, a socket for the articular processes, of the adjacent vertebrae to make the spine more stable and to facilitate a small degree of articulation.
  • The transverse processes articulate with the ribs in conjunction with the vertebral body.

• Arch of the Aorta

  • The arch of the aorta follows the ascending aorta and begins at the level of the second sternocostal articulation of the right side.
  • The arch of the aorta, or the transverse aortic arch, is continuous with the upper border of the ascending aorta and begins at the level of the upper border of the second sternocostal articulation of the right side.

• Facial Bones

  • They articulate with the frontal, temporal, maxilla, and sphenoid bones.
  • The two lacrimal bones form the medial wall of the orbit and articulate with the frontal, ethmoid, maxilla, and inferior nasal conchae.
  • The two slender nasal bones located in the midline of the face fuse to form the bridge of the noise and also articulate with the frontal, ethmoid and maxilla bones.
  • The maxilla articulates with the zygomatic, nasal, lacrimal, and palatine bones.

• Cranial Bones

  • The zygomatic process that projects from the lower squamous region and articulates with the zygomatic bone of the cheek.
  • The two bones articulate to form the sagittal suture.
  • Inside the neurocranium it articulates with the frontal and sphenoid bones.
  • Nasal: this part is smaller and articulates with the nasal bones and maxilla to contribute to the roof of the nose.
  • It also articulates with the zygomatic and nasal bones and the maxilla.