Chapter 7 Flashcards
Appendicular skeleton
The limbs, including the bones of the shoulders, upper extremities, hip, and lower extremities.
Axial Skeleton
Central bony structure of the body. It consists of the bones of the head, associated bones of the head and neck, the chest, and the spine.
Bones
The framework on which the body is built. The 206 individual pieces of the skeleton. Bone is known as osseous tissue. Bony and o steal are also adjectives for bone.
Musculoskeletal system
The combined systems of the muscles and bones. The bones provide structural support for the body and work in conjunction with the muscles to maintain body posture and produce movement.
Skeletal system
Body system that consists of all the bones, cartilage, ligaments, and joints in the body. It provides structural support and protection for soft tissues and internal organs.
It is a storage site for calcium and phosphorus. the red bone marrow is the site of blood cell production.
Skeleton
Bony framework of the body that consists of 206 bones.
Coronal suture
Immovable joint on top of the cranium, extending from one side to the other, where the frontal bone and the parietal bones meet.
Cranium
Dome-like bone at the top of the skull that contains the cranial cavity with the brain and other structures.
Ethmoid bone
Bone that forms the posterior nasal septum and the medial walls of the eye sockets. The superior and medial conchae of the ethmoid bone are bony projections within the nasal cavity. The ethmoid bone contains many small, hollow air spaces of the ethmoid sinus.
Fontanel
“Soft Spot” on a baby’s head where the cranial sutures are still open and there is only fibrous connective tissue.
Foramen magnum
Large hole in the occipital bone. The spinal cord goes through it to join with the brain.
Frontal Bone
Bone that forms the forehead and top of the cranium and ends at the coronal suture. It contains the hollow cavities of the frontal sinuses.
Occipital bone
Bone that forms the posterior base of the cranium. It contains the large opening of the foramen magnum.
Parietal bones
Bones that form the superior sides and posterior part of the cranium. They join at the sagittal suture.
Skull
Bony structure of the head that includes the cranium and facial bones
Sphenoid bone
Large, irregularly shaped bone that forms the central base and sides of the cranium and the posterior walls of the eye sockets.
It contains the hollow cavities of the sphenoid sinuses. A bony cup in the sphenoid bone holds the pituitary gland.
Suture
Type of join where one cranial bone meets another. It is an immovable joint that contains no cartilage.
Temporal bones
Bones that form the inferior sides of the cranium. Each temporal bone has a bony opening for the external ear canal and contains the hollow cavity of the middle ear.
Bony landmarks include the mastoid process behind the ear and the pointed style I’d process, a site of attachment for ligaments to the hyoid bone.
Inferior nasal conchae
Facial bones that project inwardly from the side of the nasal cavity.
Lacrimal bones
Facial bones within the eye socket. They are small, flat bones near the lacrimal glands (of the eyes that produce tears)
Mandible
Facial bone that is the lower jaw bone and contains the roots of the lower teeth. It is the only movable bone in the skull. Together with the temporal bone, the movable mandible forms the temporomandibular joint located just anterior to the ear.
Maxilla
Facial bone that is the upper jaw bone. It contains the roots of the upper teeth and the hollow cavities of the maxillary sinuses. The maxilla consists of two fused maxillary bones.
Nasal bones
Facial bones that form the bridge of the nose and the roof of the nasal cavity
Palatine bones
Facial bones that are small and flat and join in the midline to form the hard palate in the oral cavity.
Vomer
Facial bone that is the most inferior part of the nasal septum and continues posterior lymph to join the sphenoid bone.
Zygoma
Facial bone that is a cheekbone and goes to the edge of the eye socket. Also known as the zygomatic bone.
Hyoid bone
Flat, U-shaped bone in the anterior neck. It is attached by ligaments to the styloid process of each temporal bone.
The tendons of several muscles in the mouth and neck are attached dot the hyoid bone.
Ossicles
Three tiny bones in the middle ear cavity (malleus, incus, stapes) that function in the process of hearing. Collectively, they are the ossicular chain.
Costal Cartilage
Firm, but flexible connective tissue that joins the ribs to the sternum at the costochondral joint.
Ribs
Twelve pairs of bones that form the sides of the rib cage. There are true ribs, false ribs, and floating ribs.
The area between two ribs is the intercostal space.
Sternum
Vertical bone in the center of the anterior rib cage. Also known as the breastbone. The manubrium is the triangular-shaped, superior part of the sternum, while the diploid process is the inferior tip.
Thoracic cavity
Area within the rib cage that contains the heart, lungs, and other structures.
Thorax
Area between the neck and the diaphragm.
The wall of the thorax is the rib cage.
Cervical vertebrae
Vertebrae C1-C7 of the vertebral column in the neck. C1 is the atlas; C2 is the axis.
Coccyx
Group of several small, fused vertebrae inferior to the sacrum.
Also known as the tailbone
Foramen
Hole in each vertebrae where the spinal cord goes through
Intervertebral disk
Disk between two vertebrae. It consists of an outer wall of fibrocartilage and an inner gelatinous substance, the nucleus purposes, that acts as a cushion.
Sacrum
Group of five fused vertebrae interior to the lumbar vertebrae. The first one is S1, but the others are not numbered.
Spine
Bony column of vertebrae that supports the weight of the head, neck, and trunk of the body and protects the spinal cord.
Also known as the vertebral column, spinal column, or back bone.
It is divided into five regions: cervical vertebrae, thoracic vertebrae, lumber vertebrae, sacrum, and coccyx.
Thoracic Vertebrae
Vertebrae T1-T12 of the vertebral column in the are of the chest. Each vertebrae joins with one pair of ribs.
Vertebrae
Bony structure in the spine. Most vertebrae have a vertebral body (flat, circular area), spinous process (bony projection along the mid back), two transverse processes (bony projections to each side), and a foramen (hole where the spinal cord passes through).
Clavicle
This, rod-like bone on each side of the anterior neck. It connects to the manubrium of the sternum and the Afro ion of the scapular.
AKA collarbone
Glenoid fossa
Shallow depression in the scapula where the head of the humerus joins the scapula to make the shoulder joint.
Scapula
Triangular-shaped bone in the upper back on each side of the spine.
Also known as the should blade.
It contains the acromion, a flat, bony projection that connects to the clavicle.
Carpal bones
The eight small bones of the wrist joint. They connect the radius and ulna to the metacarpal bones.
Humerus
Long bone of the upper arm. The head of the humerus fits into the glenoid fossa of the scapula to form the shoulder joint. The distal end connects to the radius and ulna of the forearm.
Metacarpal bones
The five bones of the hand, one corresponding to each finger.
They connect the carpal bones to the phalanges at the metacarpophalangeal joint (MCP).
Phalanx
Each of the individual bones of a finger. The distal interphalangeal joint (DIP) is between the last two phalanges. A finger or toes is a digit.
Radius
Forearm bone located along the thumb side of the lower arm.
Its proximal end connects to the humerus. At its distal end, it connects to the carpal bones.
Ulna
Forearm bone located along the little finger side of the lower arm.
It’s proximal end connects to the humerus. The olecranon (point of the elbow) is a large, square, bony projection on the proximal ulna.
At its distal end, it connects to the carpal bones
Acetabulum
Cup-shaped, deep socket of the hip joint that is made up of the bones of the ilium, ischium, and pubis.
The head of the femur fits into the acetabulum to form the hip joint.
Ilium
Most superior hip bone. It has a broad, flaring iliac crest.
Posteriorly, each ilium joins the sacrum.
Ischium
Most inferior hip bone. Each ischium is one of the “seat bones”
Pelvis
The hip bones as well as the sacrum and coccyx of the vertebral column.
Pubis
Small bridge-like bone that is the most anterior hip bone. The pubic symphysis is a nearly immobile joint that has a cartilage pad between the two pubic bones.
Calcaneus
largest of the ankle bones.
AKA known as the heel bone
Femur
Long, weight-bearing bone of the upper leg.
AKA known as the thigh bone.
The head of the femur fits into the acetabulum to form the hip joint.
It’s distal end connects to the tibia.
Fibula
Thin bone on the lateral (little toe side) of the lower leg.
It’s proximal end connects to the tibia. At its distal end is the bony prominence of the lateral maleolus.
Hallux
The great toe
Malleolus
Bony projection of the distal tibia (medial malleolus) or the distal fibula (lateral malleolus).
Often mistakenly called the ankle bones.
Metatarsal bones
The five bones of the midfoot, one corresponding to each toe. They connect the ankle bones to the phalanges.
Patella
Thick, round bone anterior to the knee joint. Also known as the kneecap.
Phalanx
Each of the individual bones of a toe. A toe is a digit.
Tarsal bones
The seven bones of the ankle joint. The first is the talus; the largest is the calcaneus.
Tibia
Long, weight-bearing bone on the medial (great toe) side of the lower leg.
It’s proximal end connects to the femur. At its distal end is the bony prominence of the medial malleolus. It’s distal end connects to the metatarsal bones.
AKA as the shin bone.
Cancellous bone
Spongy bone in the epiphyses of long bones. It’s spaces are filled with red bone marrow that produces stem cells that mature to become all types of blood cells.
Cancellous bone is also found in the skull, clavicles, sternum, ribs, vertebrae, and each ilium.
Cortical bone
Dense, compact, weight-bearing bone inside the shaft of a long bone.
Diaphysis
The straight shaft of a long bone, such as the humerus or femur.
Epiphysis
Widened ends of a long bone that contain cancellous bone filled with red bone marrow. The epiphyseal plate is where bone growth takes place.
Foramen
Small opening in the bone where a blood vessel goes through to the bone marrow.
Medullary cavity
Cavity within the shaft of a long bone. It contains yellow bone marrow (fatty tissue).
Osseous tissue
Bone a type of connective tissue.
Periosteum
Thick, fibrous membrane that covers the surface of a bone
Cartilage
Densely packed collagen fibers that do not contain blood vessels. Articulate cartilage covers the bone ends in a synovial joint. A meniscus is a cartilage pad in some synovial joints.