ANATOMY 35 LAB UNIT 1 STUDY GUIDE CLAVICLE 1. sternal end –flat end 2. acromial end –rounded end 3. conoid tubercle (“cone shaped”) –near round end 4. Acromioclavicular joint SCAPULA Right or left scapula? 1. Superior border (superior margin) 2. Medial border (vertebral margin) 3. Lateral border (axillary margin) 4. Glenoid cavity (glenoid fossa) 5. Infraglenoid and supraglenoid tubercles 6-7. inferior angle, superior angle 8. Scapular spine 9. Acromion process 10. Coracoid process (“hook shaped”) 11. Scapular notch (suprascapular notch) 12-14. supraspinous fossa, infraspinous fossa, subscapular fossa Study Tip: Don’t get the conoid (“cone shaped”) tubercle of the clavicle mixed up with the coracoid (“hook shaped”) process of the scapula or the coronoid (“crow’s beak shaped”) process of the ulna and of the mandible! Scapula has a “c” and so does coraCoid. Ulna and Mandible have an “n” and so does coroNoid. How to tell R and L Scapula: Hold the scapula by the spine and place the subscapular fossa behind you on top of your own shoulder blade (smooth side against your skin). The glenoid cavity should face laterally, not towards the vertebral column. HUMERUS. Right or left? 1. Head 2. Greater tubercle 3. Lesser tubercle 4. Intertubercular groove (bicipital groove) 5. Anatomical neck 6. Surgical neck 7. Deltoid tuberosity 8. Medial epicondyle 9. Lateral epicondyle (skip) 10. Capitulum 11. Trochlea 12. Supracondylar ridges (medial and lateral) 13. Coronoid fossa 14. Radial fossa 15. Olecranon fossa ULNA. Right or left? 1. Olecranon process 2. Coronoid process (“crow’s beak”) 3. Semilunar notch (trochlear notch) 4. Radial notch (or groove) 5. Styloid process 6. Head 7. Ulnar tuberosity RADIUS Right or left? 1. Head 2. Neck 3. Radial tuberosity 4. Styloid process 5. Ulnar notch 6. Proximal and distal radioulnar joints How to tell R and L Humerus: Hold the humerus on the anterior surface of your arm with the olecranon fossa touching your skin (facing posteriorly). What direction is the head facing? It should be should face medially towards the body. How to tell R and L Ulna: Bend your elbow 90 degrees, then place the ulna on your forearm with the semilunar notch facing the ceiling. The radial notch should be on the thumb side, not the pinky side because the radius is on the thumb side. How to tell R and L Radius Place the radius on your forearm with the styloid process on the thumb side, facing laterally. The smooth side of the bone should be against your skin. 1 CARPALS 1. TRAPEZIUM (by the thumb) 2. TRAPEZOID (right beside thumb) 3. CAPITATE (base of 3rd met) 4. HAMATE (base of 4-5th mets) 5. TRIANGULAR or triquetrum (lateral-most) 6. PISIFORM (on palmar side, under triangular) 7. LUNATE (the one next to scaphoid) 8. SCAPHOID (the largest; near the thumb) Mnemonic for carpals: “Physical Therapy Lots of Studying, Time To Come Home”. Physical: pisiform Therapy: triangular Lots: lunate Studying: scaphoid Time: trapezium To: trapezoid Come: capitates Home: hamate METACARPALS; They are numbered metacarpal 1-5 (write “2nd metacarpal, 4th metacarpal”, etc) PHALANGES: Proximal, intermediate, distal, (write “1st distal phalanx, 2nd intermediate phalanx”, etc) NOTE: The thumb is called the pollex The hand is called the manus LOWER EXTREMITY OS COXA (or Pelvic bone or Innominate bone): It looks like one bone but it is the fusion of 3 bones during childhood (ileum, ischium, and pubis): 1. Acetabulum 2. Obturator foramen 3. Pelvic brim ILIUM 1. Iliac crest 2. Iliac fossa 3. Anterior superior iliac spine 4. Anterior inferior iliac spine 5. Posterior superior iliac spine 6. Posterior inferior iliac spine 7. Greater sciatic notch 8. Arcuate line 9. Sacroiliac joint 10. Auricular surface How to tell the difference between a male and female pevis: The female pelvis (R) has a wide pubic arch; the pubic arch of a male pelvis (L) is shaped like a “V”. ISCHIUM 1. Ischial spine 2. Ischial tuberosity 3. Lesser sciatic notch PUBIS 1. 2. 3. 4. Superior ramus Inferior ramus Pubic symphysis Symphyseal surface 5. Pubic crest 6. Pubic arch How to tell R from L Os Coxa: Place the auricular surface against the clothing on your hip, with the pubis facing anteriorly. The acetabulum should point laterally. 2 FEMUR (right or left?) 1. Head 2. Fovea capitis 3. Neck 4. Greater trochanter 5. Lesser trochanter 6. Intertrochanteric crest 7. Intertrochanteric line 8. Medial condyle 9. Lateral condyle 10. Intercondylar notch 11. Medial epicondyle 12. Lateral epicondyle (skip) 13. Gluteal tuberosity 14. Linea aspera 15. Popliteal fossa 16. Medial and lateral supracondylar line TIBIA (right or left?) 1. Medial malleolus 2. Medial condyle 3. Lateral condyle 4. Intercondylar eminence 5. Tibial tuberosity 6. Anterior crest 7. Fibular notch FIBULA 1. Head 2. Lateral malleolus How to tell R and L Femur: Place the femur on the anterior surface of your thigh, with the linea aspera touching your skin (facing posteriorly). What direction is the head facing? It should be should face medially towards the body. How to tell R and L Tibia: Place the tibia on the anterior surface of your leg with the tibial tuberosity facing anteriorly (not touching your leg). What side is the medial malleolus on? It should be medial, towards the midline of the body. How to tell head from malleolus on fibula: The head is flatter on top and the malleolus is pointy at the tip, and the malleolus has its smooth facet more on the side of the bone, instead of on the top. FOOT: TARSALS: 1. TALUS a. Facet for medial malleolus b. Facet for lateral malleolus 2. CALCANEUS a. Calcaneal tuberosity 3. NAVICULAR 4. CUBOID 5. CUNEIFORMS (MEDIAL, INTERMEDIATE, LATERAL) METATARSALS (1-5). The 5th metatarsal has a STYLOID PROCESS PHALANGES (proximal, intermediate, distal) PATELLA 1. Apex 2. Base 3. Articular facet for medial condyle of femur 4. Articular facet for lateral condyle of femur 5. Medial and lateral border How to medial from lateral facet on patella: Place the patella on the table, facets facing down. The bone will always fall on the side of the lateral facet, with the medial facet not touching the table. 3 THE KNEE 1. patellar ligament (or patellar tendon) 2. quadriceps tendon 3. lateral collateral ligament (fibular collateral ligament) 4. medial collateral ligament (tibial collateral ligament) 5. lateral meniscus 6. medial meniscus 7. anterior cruciate ligament 8. posterior cruciate ligament SKULL Cranium (the whole skull except for mandible) Calvarium (lid of the cranium) Anterior, Middle, and Posterior cranial fossa Frontal bone 1. Coronal suture 2. Supraorbital foramen (supraorbital notch) 3. Superior orbital fissure 4. Inferior orbital fissure (actually, this is part of the sphenoid bone) 5. Glabella 6. Frontonasal suture Parietal bones 1. Sagittal suture 2. Squamous suture (squamosal suture) Occipital bone 1. Lambdoidal suture 2. Foramen magnum (for spinal cord and vertebral arteries) 3. Occipital condyles 4. Hypoglossal canal (for hypoglossal nerve) 5. Occipitomastoid suture 6. Sutural bones (any tiny bone completely surrounded by a suture) 7. Superior nuchal line 8. Inferior nuchal line 9. External occipital protuberance 10. External occipital crest Temporal bones 1. External auditory meatus (eternal acoustic meatus) 2. Mandibular fossa 3. Zygomatic process (don’t write “zygomatic” since that is another bone) 4. Styloid process 5. Mastoid process 6. Squamous portion 7. Petrous portion (contains the ear ossicles/bones) 8. Jugular foramen (for jugular vein) 9. Internal auditory meatus (internal acoustic meatus for vestibulocochlear nerve) 10. Stylomastoid foramen 11. Tempomandibular joint (TMJ) 4 Sphenoid bone 1. Sella turcica (where the pituitary gland sits) 2. Lesser wings 3. Anterior clinoid process 4. Greater wings 5. Optic foramen (for optic nerve) 6. Pterygoid processes (“wing-like”) 7. Foramen ovale (for trigeminal nerve) 8. Foramen spinosum 9. Foramen rotundum (for trigeminal nerve) 10. Carotid canal (for carotid artery; actually, this canal is part of the temporal bone) 11. Foramen lacerum Ethmoid bone 1. Crista galli 2. Cribiform plate (area with holes in it for olfactory nerves) 3. Olfactory foramina (the holes in the cribiform plate) 4. Ethmoid sinuses 5. Perpendicular plate 6. Middle nasal conchae Optic foramen Foramen lacerum Foramen rotundum Foramen ovale Foramen spinosum Internal auditory meatus Carotid canal Foramen magnum Jugular Foramen 5 Mandible 1. Ramus 2. angle 3. Body 4. Condylar process (mandibular condyle) 5. Mandibular notch 6. Coronoid process 7. Alveolar process 8. Mental process 9. Mental foramen 10. Mandibular foramen 11. Mandibular symphysis Maxilla 1. Alveolar processes 2. Maxillary sinuses 3. Zygomatic process 4. Infraorbital foramen (for trigeminal nerve) 5. Incisive foramen 6. Frontal process of the maxilla 7. Palatine process of maxilla 8. Hard palate 9. Palatine suture 10. Anterior nasal spine Other skull bones: 1. Zygomatic bones 2. Nasal bones 3. Lacrimal bones Lacrimal canal 4. Vomer bone 5. Inferior nasal conchae FETAL SKULL 1. Anterior fontanel 2. Posterior fontanel 3. Mastoid fontanel 4. Sphenoid fontanel 5. Occipital bone 6. Frontal bone 7. Parietal bone 8. Temporal bone 9. Sagittal suture 10. Metopic (frontal) suture Palatine bones 1. Horizontal portion 2. Perpendicular portion 3. Pyramidal process EAR BONES 1. Malleus (mallet shaped) 2. Incus (anvil shaped) 3. Stapes (stirrup shaped) NOTE: Do not use the terms hammer, anvil, and stirrup on the exam! 6 Frontal bone Ethmoid bone Sphenoid bone Zygomatic bone Maxilla BONES OF THE ORBIT Superior orbit: Frontal bone Inferior orbit: Maxilla Lateral orbit: Zygomatic bone Medial orbit: Ethmoid Posterior orbit: Sphenoid The zygomatic arch (cheek area) consists of three bones: 1) Zygomatic bone 2) Zygomatic process of the temporal bone 3) Zygomatic process of the maxilla 7 BONES OF THE ORBIT Frontal bone Ethmoid bone Sphenoid bone Zygomatic bone Maxilla bone 8 ATLAS (Don’t just call it C-1) 1. Transverse process 2. Transverse foramen 3. Anterior tubercle 4. Posterior tubercle 5. Inferior articular facet 6. Superior articular facet 7. Facet for the dens of axis 8. Vertebral foramen 9. Transverse ligament of atlas AXIS (Don’t just call it C-2) 1. Dens or odontoid process 2. 3. 4. 5. 6. 7. Superior articular facet Inferior articular process Transverse process Transverse foramen Spinus process Vertebral foramen CERVICAL VERTEBRAE 1. Spinous process 2. Transverse process 3. Transverse foramen 4. Lamina 5. Pedicle 6. Body 7. Vertebral foramen 8. Superior articular process THORACIC VERTEBRAE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Inferior facet for head of rib Superior facet for head of rib Facet for tubercle of rib Inferior articular process Superior articular process Transverse process Spinous process Pedicle Lamina Body Vertebral foramen LUMBAR VERTEBRAE 1. Spinous process 2. Transverse process 3. Lamina 4. Pedicle 5. Body 6. Vertebral foramen 7. Inferior articular process 8. Superior articular process 9 SACRUM 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Sacral promontory (upper lip of sacrum on internal side) Transverse lines Apex (the apex of the sacrum touches the base of the coccyx) Sacral foramina Median sacral crest Ala Superior articular process Sacral canal Lateral sacral crest Sacral hiatus COCCYX 1. Apex 2. Base (the base of the coccyx touches the apex of the sacrum) KNOW THE FOLLOWING ON A VERTEBRAL COLUMN: 1. Intervertebral foramina 2. Intervertebral disc STERNUM MANUBRIUM Jugular notch Clavicular notches Costal notches BODY Costal notches XIPHOID PROCESS RIBS: (Twelve ribs altogether) Know the following on a full skeleton only 7 TRUE RIBS 5 FALSE RIBS (2 of these ribs are the floating ribs) 2 FLOATING RIBS COSTAL CARTILAGES Know the following on a single rib 1. Head 2. Neck 3. Articular tubercle 4. Costal angle How to tell true from false rib: A true rib inserts directly into the sternum (by way of its costal cartilage). A false rib’s costal cartilage inserts into the costal cartilage of the rib above it. Two of the false ribs are floating ribs that have no costal cartilages and do not insert into the sternum at all. HYOID BONE 1. Body 2. Greater horn 3. Lesser horn 10 HISTOLOGY = “tissues” EPITHELIUM: Simple squamous Found in lungs (deep region), kidney glomerulus, and blood vessels Simple cuboidal Found in kidney tubules, hepatocytes (liver), and thyroid follicles Simple columnar Found in stomach and intestines (areas that secrete substances) Identify goblet cell (secretes mucous) Pseudostratified columnar Found in trachea and bronchi (not the deep area of lungs) Identify goblet cell (secretes mucous) and cilia Stratified squamous Non-keratinized: Found in oral cavity, esophagus, anus, vagina (moist skin areas) Keratinized: Found in dry skin areas (epidermis) Identify stratum corneum, stratum granulosum, stratum lucidum, stratum spinosum, stratum basale, dermal papilla, and interpapillary peg Stratified cuboidal Found in sweat glands Transitional Found in urinary bladder and ureter CONNECTIVE TISSUE PROPER (FIBROUS CONNECTIVE TISSUE) Adipose (fat) Identify adipocyte, nucleus, lipid droplet Reticular Found in lymph node and spleen Identify reticular fibers Areolar (Loose) Found in upper dermis and visceral (organ) serous (watery secretion) membranes Identify fibroblasts (dark nuclei), collagen fivers (wide, pale), elastic fibers (dark, thin) Dense regular Found in tendons and ligaments Identify collagen bundles, fibroblast nuclei Dense irregular (substitute this in place of dense elastic) Found in lower dermis 11 SPECIAL CONNECTIVE TISSUE Cartilage Types: Hyaline Found in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates Identify chondrocytes, lacunae Elastic Found in outer ear and epiglottis Identify chondrocytes, lacunae, elastic fibers Fibrocartilage Found in vertebral discs, meniscus of knee joint, pubic symphysis Identify chondrocytes Bone Compact bone Found in diaphysis (shaft) of long bones Identify osteon, central canal, lamellae, canaliculi, osteocytes Cancellous (spongy) bone Found in epiphysis (ends) of long bones Identify trabeculae and bone marrow Blood Identify red blood cell, white blood cell, platelet (thrombocyte) 12