Final Review Flashcards
Appendicular Skeleton
Bones of the limbs
Axial Skeleton
Bones of the skull, vertebral column, ribs, and sternum
Heterotopic Skeleton
Bones in unusual but normal locations
Os penis
Classification of Bone: Structure
Compact Bone
Spongy Bone
Classification of Bone: Origin
Cartilaginous Bone - Bone replaces cartilage model
Dermal Bone - Bone forms directly within a sheet of CT
Bone Development: Endochondral Ossification
Cartilaginous plates (epiphyseal plates) remain between and separate adjacent centers until the bones are mature. Bones elongate.
Bone Development: Intramembranous Ossification
No cartilage model is involved and the bones grow in diameter.
Anatomy of a Long Bone
Diaphysis - shaft
Epiphysis - end
Physis - plate of growing cartilage
Metaphysis - rapidly growing, flared segment located on diaphyseal side
Apophysis - large, bony projections which develop from independent centers of ossification
Blood Supply to Bones
Nutrient artery passes through nutrient foramen
Manus Bones
Accessory carpal bone Ulnar carpal bone Intramedial radial carpal bone Metacarpals Proximal phalanges Middle phalanges Distal phalanges
Pes Bones
Calcaneus Talus Central tarsal bone Tarsal bone (I through IV) Metatarsals
Specific Landmarks
C1 - Atlas
C2 0 Axis
C6 - Expanded ventral lamina of transverse process
C7 - Lacks transverse foramina and has caudal costal foveae
T11 - Anticlinal vertebral
Vertebral Formula
C7 T13 L7 S3 CD~20
3 Types of Joints
Fibrous
Cartilaginous
Synovial
Fibrous Joints
Little to no movement
Cartilaginous Joints
Permits only limited movement, such as compression or stretch
Synovial Joints
Freely moveable
Skeletal components not directly jointed to one another at contact surface
Basic Features of Synovial Joints
Joint cavity
Joint capsule
Synovial fluid
Articular cartilage
Articular Cartilage
Covers the articular surfaces of bones
Fibrous Layer of Joint Capsule
Blends with the periosteum at or near the margin of the articular cartilage
Ligament
A band or cord of connective tissue uniting 2 or more bones or cartilages
Tendon
A band or cord of CT that unites muscle with bone
Collateral Ligaments
Located medially and laterally
Synovial Membrane
Primary source of pain in joint diseases
Function of Synovial Fluid
Lubricate the contact surfaces of synovial joints
Nourishment
Removal of wastes
Fibrocartilaginous Plates
Menisci/articular discs
Thoracic Limb
Humeral
Cubital
Carpal
Digital
Humeral Joint
Lacks “true” collateral ligaments
Supraspinatus and infraspinatus muscles laterally
Subscapularis and coracobrachialis muscles medially
Cubital Joint
Compound joint
Collateral ligaments
Joints of Manus
Antebrachiocarpal Middle carpal Carpometacarpal Metacarpophalangeal Proximal interphalangeal joint Distal interphalangeal joint
Pelvic Limb Joints
Coxal
Genual
Tarsal joint complex
Digital joints
Coxal Joint
Lacks collateral ligaments
Ligament of the head of the femur
Genual Joint
2 menisci
10 ligaments
Tarsal Joint Complex
Tarsocrural Talocalcaneal Talocalcaneocentral Calcaneoquartal Centrodistal Tarsometatarsal
Intervertebral Articulations
Atlantooccipital (synovial)(yes joint)
Atlantoaxial (synovial)(no joint)
Intervertebral Articulations
Between articular processes (synovial)
Between vertebral bodies (fibrocartilaginous)
Parts of an intervertebral disc
Anulus fibrosus
Nucleus pulposus
Costovertebral Articulation
Both articulations are synovial
Vertebra of the same number as rib
In how many articulations total is the 5th thoracic vertebra involved?
12 2 - intervertebral 2 - cranial 2 - caudal 2 - tubercles with ribs 2 - cranial rib head 2 - caudal rib heads
I’m skipping integument.
Suck it.
And myology.
Yep.
What type of joints are associated with the proximal aspects of a rib?
Synovial
Muscles of Respiration: Inspiration
Diaphragm
Scalenus m.
Serratus dorsalis cranialis m.
Muscles of Respiration: Expiration
Serratus dorsalis caudalis m.
Sternal or “true” ribs
Ribs 1-9
Asternal or “false” ribs
Ribs 10-13
Lumbocostal Arch
Sympathetic trunk
Major splanchnic n.
Aortic Hiatus
Aorta
Azygos vein
Thoracic duct
Esophageal Hiatus
Esophagus
Dorsal vagal trunk
Ventral vagal trunk
Caval Foramen
Caudal Vena Cava
Mediastinum
Encloses: Thymus LNs Heart Aorta Trachea Esophagus Nerves and vessels CT & fat
Identify the layer/portion of a tendon sheath which is in direct contact with the tendon.
Visceral layer
Pleural Cavities and Membranes
Visceral Pleura
Parietal Pleura
Connecting Pleura
Connecting Pleura
Pulmonary Ligament
Plica Vena Cava
Pericardial Cavity & Membranes
Pericardium
Pericardial Sac
Fibrous pericardium
Prevents significant distension of the pericardial cavity
Excessive fluid accumulation
Cardiac tamponade
Left Lung
2 lobes
Cranial lobe and caudal lobe
Right Lung
4 lobes
Cranial, caudal, middle, and accessory
Cardiac Notch
Right lung
Low in right 4th-5th intercostal space
Pulmonary Blood Supply
Functional - Pulmonary arteries
Nutritional - Bronchoesophageal artery
Pulmonary circulation
Lower pressure
From the heart to the lungs and back
Systemic Circulation
Higher pressure
Distributed from the heart throughout the body and back
Visceral Serous Pericardium
“Epicardium”
Directly comes in contact with the heart
“Surgeon’s Pericardial Sac”
Pericardial mediastinal pleura
Fibrous pericardium
Parietal serous pericardium
Layers of Heart
Epicardium
Myocardium
Endocardium
Location of the Heart
3rd to the 6th intercostal space
Conduction System
Sinoatrial node
Atrioventricular node
Purkinje fibers
Trabecula Septomarginalis
Right ventricle only
Grooves of Heart
Coronary groove
Subsinuosal interventricular groove
Paraconal interventricular groove
Coronary Arteries
Arise from ascending aorta Left Coronary 1. Circumflex branch a. Subsinuosal interventricular branch 2. Paraconal interventricular branch 3. Septal branch Right Coronary
Cardiac Veins
Great cardiac vein
Middle cardiac vein
Coronary sinus
Branches of the Aortic Arch
Brachiocephalic trunk - L. common carotid - R. common carotid - R. subclavian Left subclavian
Venous Angle
At level where right external and subclavian v. join
At level where left trachial trunk and subclavian v. join
Thoracic Duct
Receives the lymph from 3/4 of the body
Right Lymphatic Duct
Receives the lymph from the right half of the head and neck and the right thoracic limb and shoulder
Fetal Structure: Umbilical a.
Adult Structure: Round ligaments of the urinary bladder
Fetal Structure: Umbilical v.
Adult Structure: Round ligament of the liver
Fetal Structure: Ductus venosus (liver)
Adult Structure: Ligamentum venosum
Fetal Structure: Ductus arteriosus
Adult Structure: Ligamentum arteriosum
Fetal Structure: Foramen ovale
Adult Structure: Fossa ovalis
CNS
Brain and spinal cord
PNS
Cranial nerves and spinal nerves
Nerve
A collection of neuronal cell processes, axon, located in the PNS
Tract
A collection of neuronal cell processes traveling within the CNS
Ganglion
A collection of neuron cell bodies outside the CNS
Nucleus
A collection of neuron cell bodies within the CNS
Primary Afferent Neurons
Conduct sensory impulses from periphery into the CNS
Final Efferent Neurons
Conduct motor impulse from CNS to effector organ (lower motor neurons, LMNs)
Interneurons
Short neurons interposed between afferent and efferent neurons
Located entirely within the CNS
May be excitatory or inhibitory
Projection Neuron
In CNS
Long axons
Descending projection neurons are known as upper motor neurons (UMN)
General Somatic Efferent (GSE)
Supply skeletal muscles
General Visceral Efferent (GVE)
Form the autonomic nervous system (ANS)
2 neuron chain between CNS and effector organ
General Somatic Afferent (GSA)
Carry sensory information
Cell bodies are located in sensory ganglia
General Visceral Afferent (GVA)
Carry sensory information from the visceral body system
Cell bodies are located in sensory ganglia
Special Somatic Afferent (SSA)
Carry visual and auditory information
Special Visceral Afferent (SVA)
Carry taste and smell sensations
Organization of Spinal Nerves
Cervical has 8, all exit cranially to vertebrae
Thoracic has 12, exit caudally
Lumbar has 7, exit caudally
Sacral has 3, exit caudally
Autonomic Nervous System (ANS)
Controls involuntary visceral activity in order to maintain homeostasis or respond to stress