Lab Exam 1 - Bones, nerves, and foramens Flashcards
Olfactory nerve
Cranial nerve I
Passes through olfactory foramina of cribriform plate
Sensory
Optic nerve
Cranial nerve II
Passes through optic canal
Sensory
Oculomotor nerve
Cranial nerve III
Passes through superior orbital fissure
Motor
Trochlear nerve
Cranial nerve IV
Passes through superior orbital fissure
Motor
Trigeminal nerve
Cranial nerve V
Passes through superior orbital fissure, foramen rotundum, foramen ovale, mental foramen
Both
Abducens nerve
Cranial nerve VI
Passes through superior orbital fissure
Motor
Facial nerve
Cranial nerve VII
Passes through internal auditory meatus and stylomastoid foramen
Both
Vestibulochlear nerve
Cranial nerve VIII
Passes through internal auditory meatus
Sensory
Glossopharyngeal nerve
Cranial nerve IX
Passes through jugular foramen
Both
Vagus nerve
Cranial nerve X
Passes through jugular foramen
Both
Spinal accessory nerve
Cranial nerve XI
Passes through jugular foramen
Motor
Hypoglossal nerve
Cranial nerve XII
Passes through hypoglossal canal
Motor
Cranial nerves I-XII
Olfactory nerve I
Optic nerve II
Oculomotor nerve III
Trochlear nerve IV
Trigeminal nerve V
Abducens nerve VI
Facial nerve VII
Vestibulochlear nerve VIII
Glossopharyngeal nerve IX
Vagus nerve X
Spinal accessory nerve XI
Hypoglossal nerve XII
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Olfactory foramina of the cribriform plate (foramen)
Olfactory nerve I
Optic canal (foramen)
Optic nerve II
Superior orbital fissure (foramen)
Oculomotor nerve III, trochlear nerve IV, trigeminal nerve V, and abducens nerve VI
Foramen rotundum (foramen)
Trigeminal nerve V
Foramen ovale (foramen)
Trigeminal nerve V
Foramen lacerum (foramen)
No structure passes through because it is covered by a membrane in adults
Foramen spinosum (foramen)
Middle meningeal artery
Carotid canal (foramen)
Internal carotid artery
Internal auditory meatus (foramen)
Facial nerve VII, vestibulocochlear nerve VIII
Jugular foramen (foramen)
Internal jugular vein, glossopharyngeal nerve IX, vagus nerve X, and spinal accessory nerve XI
Hypoglossal canal (foramen)
Hypoglossal nerve XII
Supraorbital foramen (foramen)
Supraorbitary artery and nerve
Inferior orbital fissure (foramen)
Zygomatic nerve and blood vessels
Infraorbital foramen (foramen)
Infraorbital nerve
Mental foramen (foramen)
Blood vessels and trigeminal nerve V
Foramen magnum (foramen)
Spinal cord
Stylomastoid foramen (foramen)
Facial nerve VII
Mandibular foramen (foramen)
Alveolar nerve
Transverse foramen of cervical vertebrae (foramen)
Vertebral arteries
Costal groove (foramen)
Neurovascular bundle
Bones in adult body
206-213
Axial skeleton
80 bones
Central core of body
Consists of head, neck, back and chest
Axial skeleton protects and cushions your brain, spinal cord and organs
Appendicular skeleton
126 bones
Comprises the upper and lower extremities
Appendicular skeleton facilitates movement of the human body
5 major functions of skeletal system
Support
Movement
Protection
Storage of minerals
Production of blood cells
Trabeculae
Found within spongy bone
Network of tiny beams and struts
Thin columns and plates of bone that create a spongy structure in a cancellous bone
Long bones
Longer than they are wide
Generally consist of a shaft with heads at either end
Primarily composed of compact bone
Example: Humerus
Short bones
Roughly cube-shaped
Contain more spongy bone than compact bone
Example: Carpals
Flat bones
Generally flattened along a major aspect of their geometry, but can be curved
Consists of two wafer-like layers of compact bone between a layer of spongy bone
Example: Sternum, ribs, occipital bone
Irregular bones
Do not fit in any other category due to their irregular morphology
Example: Vertebra
Sesamoid bones
Bones embedded in tendons
Small round bones
Commonly found in the tendons of the hands, knees, and feet
Example: Patella
Periosteum
Encapsulates bones
Tough fibrous membrane that covers the compact bone
Composed of two layers:
*Outer fibrous layer where muscle tendons and bone ligaments attach
*Inner cellular layer that produces osteoblasts
Diaphysis
Long, central shaft of long bone
Proximal epiphysis
End of long bone closest to the trunk of the body
Distal epiphysis
End of long bone furthest away from trunk of body
Medullary cavity
Interior space within the diaphysis of a long bone
Contains high concentration of yellow marrow
Endosteum
Lines medullary cavity
Metaphysis
Between diaphysis and epiphysis
Epiphyseal line
Replaces epiphyseal plate
Indicates the bone has transitioned to the adult stage (no longer growing)
Bony remnant of growth plate
Epiphyseal plate
Also known as growth plate
Bone growth stops when cartilage of epiphyseal plate disappears and is replaced by bone
Flat bone (continued)
Thin bones with NO marrow cavity
Made of layer of spongy bone between superficial layers of compact bone
Contains red marrow within diploe
Cortex (flat bones)
Compact bone layers of flat bones
Individually called external and internal tables
Thick to provide strength for bone
Diploe
Spongy bone between the tables
Filled with red marrow
A type of loose connective tissue made of stem cells from which all blood cells arise
Projections
Processes that grow out from the bone and serve as sites of muscle attachment or help form joints
Depressions
Indentations or openings in the bone that often serve as conduits for nerves and blood vessels
Tuberosity
Large rounded projection
Projection
Example: Ischial tuberosity of pelvic bone
Crest
Narrow ridge of bone; usually prominent
Projection
Example: Ischial crest of pelvic bone