Exam One Flashcards
Four areas of anatomy
Histology
Gross anatomy
Neuroanatomy
Embryology
Skeletal system
Over 200 bones
Give body shape
Protect organs
Bones and joints
Muscular system
Skeletal, smooth, cardiac
Contains muscle that works with skeletal system
Cardiovascular system is made up of these three things?
Heart, vessels, blood
Nervous system made up of?
Brain, spinal cord, cranial nerves, spinal nerves
Regulation system (three systems)
Endocrine, lymphatic, urinary
Endocrine system definition
Series of gland to regulate the body process. Produce and secrete hormones
Lymphatic system
Helps regulate body defences
Urinary system
Kidneys, ureters, bladder, filters waste
Reproductive system
Ovaries, genitals
Infrastructure systems
Skeletal, muscular, cardiovascular, nervous
Energy systems
Respiratory, digestive
Microscopic
Small
Macroscopic
Large
Organization of human body
Chemical
cellular
tissue
organ
organisms system
Chemical level
A molecule is a group of atoms bonded
Cellular level
Cells are the smallest living structures
Tissue level definition
Are similar cells that perform specialized functions
Organ level
Organs are two or more tissues that work together to perform complex functions
Organismal system
All body systems function interdependently in a single living human
Body divisions
Axial and appendicular
Axial region
Forms the main vertical axis of the body includes head, neck, and trunk
Appendicular
Includes the limbs or appendages that attach to the axis
Integumentary system
Makes up our body covering and includes our skin, hair, nails
Dorsal cavity is made up of?
Contains brain and spinal cord
Ventral body cavities
Thoracic
Abdominal-pelvic
Thoracic cavity (three categories)
Three categories
- superior mediastinum
- pericardial
- pleural
The Superior mediastinum contains?
Esophagus and trachea
Pericardial
Heart
Pleural
Lungs
Adomino- pelvic contains?
Abdominal digestive viscera
Pelvic bladder and reproductive organs
Superior meaning
Above or up
Inferior meaning
Below or down
Anterior
Front
Medial
Towards the midline
Posterior
Behind
Lateral
Away from the midline
Proximal
Near or closer to area of origin
Distal
Away or further from area of origin
Superficial
Closer to surface of body
Deep
Further from surface of body
Parietal
Component of body walls, muscle, connective tissue
Visceral
Lines out surface of organs that are located in body cavities
Sagittal plane
Is a vertical plane that divides the body into left and right
Coronal plane
Is a vertical plane that divides the body into anterior and posterior parts
Horizontal plane
Divides the body into superior and inferior planes
Oblique plane
Passes through body at an angle
Longitudinal plane
That is perpendicular to the horizontal plane
Epithelium
Is tissue composed side by side with no intercellular substance
Covering epithelium
Cells that cover the external and internal surfaces
Glandular epithelium
Cells that produce and secrete product aka hormones
Cellularity (epithelial cells)
Adjacent epithelial cells are joined by specialized junctions
Four types of specialized junctions
Tight
Adhering
Desmosomes
Gap
Polarity
Epithelial cell has an exposed surface that faces the exterior of the body or internal space
Attachment (Epithelial cell)
Epithelial cells rest on and are attached to the basal lamina
Avascularity
Epithelial tissue have no direct blood supply
Regeneration
Epithelial cells are renewed continuously
Support and protection
(Epithelium cell)
Epithelium covers and lines external and internal surfaces of body protect tissue
Permeability
Epithelium allows substances to be absorbed into the body
Sensation
Epithelial tissues contain cells to detect sensory stimuli
Secretion
Epithelial secrete substances aka oil, hormones, enzymes
Two types of cell organization
Simple and stratified
Simple cell organization
One layer of cells
Stratified cell organization
Two or more layers of cells
Three type of cell shape
Squamous
Cuboidal
Columnar
Simple squamous
One layer of flattened cells
Found in lining of blood vessel
Simple cuboidal
Consists of single layer of cube like cells
Found in lining of glands
Simple columnar
Consists of single layer of column shaped cells
Ex: lining found in GI tract
Stratified squamous
Multiple layers of flat shaped cells
Ex: make up layer of superficial skin
Stratified cuboidal
Multiple cube like layers
Ex: ducts of glands
Helps with secretion protection
Stratified columnar
Multiple layers of columns shape cells
Ex: male urethra
Transitional cell
Consists of multiple layers of epithelial cells allows stretching
Pseudostratified cell
Comprises only a single layer of cells
Types of connective tissue
Loose
Dense regular
Dense irregular
What does tissue do?
Helps support and protect
Structural framework
Medium exchange
Storage and repair
Defense
Ground substance
Occupies the space between the cells and fibres of connective tissues
Elastic fibres
Thin and branched able to stretch
Collagen fibres
Most common fibre
Are flexible
Reticular fibres
Are thin fibres that form a branching interwoven network with no common alignment
Supporting connective tissue
Bones and cartilage
Specialized connective tissue
Fluid blood lymph
Three types of fibroblasts
Collagen fibres
Reticular fibres
Elastic fibres
What is cartilage
Important structural component of the body
Found in joints, vertebrae, ears, nose, bronchial tubes
Three types of cartilage
Hyaline
Fibrocartilage
Elastic
Hyaline cartilage
Wear resistant tissue to bear and distribute weight
Surface of moveable joints, walls of nose, trachea, ribs
Fibrocartilage
Tough and inflexible
Found in intervertebral discs
Symphysis pubis
Elastic cartilage
More flexible
Found in ear, epiglottis
Perichondrium
(Bone histology)
Dense irregular connective tissue that envelops cartilage to provide nutrients
Lacunae
Small spaces in cartilage that house one or more chondrocytes
Two type of bone composition
Organic and inorganic
Organic bone composition
Makes up 1/3
Ground substance, cells, fibres
Inorganic bone composition
Makes up 2/3
Minerals and salts
Functions of skeletal system
Support, protection, blood cell formation, storage and movement
Two type of bone composition (layer)
Outer cortical layer
Inner cancellous layer
Outer cortical layer
Made up of compact bone hard and strong
Inner cancellous layer
Made up of spongy bone
Four types of bone
Flat bone
Irregular bone
Long bone
Short bone
Axial skeleton made of?
Skull
Vertebral
Ribs
Sternum
Skull: how many bones?
22 bones
Cranial bones
(How many/funcation)
8 bones
Protects brain
How many bones make up Facial bones
14 bones make up face
How many bones in the Vertebral column
Made up 26 bones
24 vertebrae
1 sacrum
1 coccyx
Division of vertebral column
Cervical: 7
Thoracic: 12
Lumber: 5
Sacrum: 5 fused
Coccyx: 4 fused
Atypical vertebrae
C1 always movement yes and no
Ribs (axial skeleton)
12 pairs of ribs
7 true pairs
3 false
2 floating
Sternum (axial Skeleton)
Makes up anterior portion of the thoracic cage
Three parts of sternum
Manubrium
Body
Xiphoid process
What is the appendicular skeleton
Refers to upper and lower limbs
How many bones make up the upper limbs?
Made up of 30 bones
Four regions of upper limbs
Pectoral girdle
Arm
Forearm
Wrist/hand
Arms (appendicular skeleton)
Humerus
Forearm (appendicular skeleton)
Radius
Ulna
Wrist and hand (appendicular skeleton)
Wrist: 8 carpal bones
Hand: 5 metacarpal bones
Fingers: 14 phalanges
What is articulation (joints)
Place where bones meets another bone, cartilage or teeth
Five categories of articulation (joints)
Glenohumeral joints
Hip joint
Elbow joint
Intervertebral joint
Suture
Types of synovial joints (six types)
Plane
Hinge
Pivot
Condylar
Saddle
Ball and socket
Plane joint
No axial movement
Ex: between vertebrae
Hinge joint
Uniaxial movement
Ex: elbow joint
Pivot joint
Uniaxial movement
Ex: radius and ulna
Condylar/ellipsoid joint
Biaxial movement
Ex: wrist joint
Saddle joint
Biaxial movement
Ex: joint in thumb
Ball and socket joint
Multiaxial movement
Ex: shoulder and hip joint
Types of loose connective tissue
Areolar
Adipose
Reticular
Types of dense connective tissue
Regular
Irregular
Elastic
Dense regular connective tissue
Found in ligaments and tendons
Dense irregular connective tissue
Found in dermis of skin and digestive tract
Provides structural strength
Dense elastic connective tissue
Found in lung walls and large arteries
Allows tissue to recoil
Loose adipose connective tissue
Found in abdomen
Provides food reserve
Supports and protects organs
Loose areolar connective tissue
Found under epithelia of body
Cushions organs
Helps with inflammation
Loose reticular connective tissue
Found in spleen and lymph nodes
Forms soft internal skeleton that supports other cells
Spongy bone
Contains marrow
Periosteum (of bone)
Outermost layer involved in repairing fractures
Endosteum
Production of osteogenesis cells and osteoclasts
Osteoclast
Remove bone during growth and remodeling
Osteoblasts
Facilitate the mineralization of osteoid matrix
Osteocytes
Differentiated osteoblasts trapped in the bone containing cytoplasmic projections
Central/haversain canal (bone structure)
Contain small blood vessels and nerve fibers that serve the osteons cells
Perforating/volkmanns canal
Lie at right angles to the long axis of the bone and connect the blood and nerve supply
Lamellae (bone structure)
A layer such as of bone matrix in the osteon of compact bone
Three types of muscle
Cardiac
Smooth
Skeletal
Skeletal muscle
Help the human body move, most are attached to bones via tendons
Cardiac muscle
Found in heart
Contracts rhythmically
Smooth muscle
Controlled by nervous system or hormones
Voluntary muscle
That is consciously controlled
Skeletal muscle
Involuntary muscles
Not consciously controlled
Smooth and cardiac muscles
Muscle properties: excitability
Ability of muscle tissue to receive and respond to electrical signals form nerves
Muscle properties: contractility
Muscle cell is excited by nerve or hormone this cause muscle to shorten
Functions of skeletal muscle
Produce movement
Maintain posture
Control excretion
Produce heat
Support and protect internal organs
Three layers of connective tissues in skeletal muscles
Epimysium
Perimysium
Endimysium
Epimysium
Is the layer of connective tissue that surrounds and entire muscle
Perimysium (muscle)
(2nd layer)
Layer of connective tissue surrounding a bundle of muscle fibres within a muscle
Endomysium (muscle)
(3rd layer)
Layer of connective tissue that surrounds the individual muscle cells within a muscle bundle
Muscle feature: sarcolemma
Cell membrane surrounding a muscle cell
Beneath are the nuclei, myofibrils and sarcoplasm
Features of muscle: nuclei
Are multinucleated located towards the outside of the myofiber
Features of muscle: myofibrils
Are the structural units of the muscle cell and contain contractile myofilaments
Features of muscle: myofilaments
Are the contractile units of the muscle cell
Contain actin and myosin
Actin (thin)
Myosin (thick)
A-band (muscle)
Made up of thick and thin filaments
Z-line (muscle)
Is composed of protein that make a zig zag line marking the beginning and end of each sarcomere
M-line (muscle)
Is composed of protein down the center of the sarcimere this is where thick filament attach
I-band (muscle)
Is made up of thin filament where the z line attaches
Features of muscle: Sarcoplasmic Reticulum
Surrounds each myofibril and is where the muscle cells stores calcium
Features of muscle: t-tubules
Are extensions of the sarcolemma that surround the myofibrils and transmit nerve stimulation
Four main facial muscles
Frontalis
Zygomaticus
Orbicularis oculi
Orbicularis oris
Frontalis muscle
Lifts eyebrows
Zygomaticus
Draws angle of mouth to make smile
Orbicularis oculi
Surrounds eye closed the eye
Orbicularis oris
Surrounds mouth
Temporalis muscle
Fan shaped muscle that extends from the temporal fossa of partial bone to the coronoid process of mandible
(Retracts)
Masseter muscle
Is a powerful muscle that extends from zygomatic arch to the angle of the mandible
Elevate and protract jaw (move forward)
Muscle of head: sterncleidomastoid
Flexes the neck with bilateral contraction
Muscle of head: semispinalis capitis
Extend the neck with bilateral contraction and turns the face slightly
Hemopoietic tissue function in bones
Producing blood cells
Connective tissue have three features in common they are?
Cells
Protein fibers
Ground substances
Which primary tissue would have blood, body fat, ligaments, tendons?
Connective tissue
Gross anatomy refers to?
Structures visible to the unaided eye
Muscle of the head: splenius capitis
Extends the neck with bilateral contraction and causes flexion and lateral rotation of the neck
Muscles of the thorax?
External intercostals
Internal intercostals
Muscle of the head include?
Sternocleidomastoid
Semispinalis capitis
Splenius capitis
Muscle of the thorax: external intercostals
Are the most superficial and their fibres run anteriorly and inferiorly between ribs
Aid in inspiration
Muscle of the throax: internal intercostal
Lie deep to the external intercostals and their Fibres run posteriorly and inferiorly
Aid in expiration
Muscle of the back?
Erector spinae muscles
Erector spinae muscle
Are a group of muscles that help keep the spine erect
Muscle of the abdominal wall?
External oblique
Internal oblique
Transverse abdominis
Rectus abdominis
Muscle of the abdominal wall: external oblique
Is the most superficial of the abdominal wall
Run anteriorly and inferiorly
External oblique function
Flexes the vertebral column
Compresses abdominal wall to force expiration
Muscle of the abdominal wall: internal oblique
Lies deep to the external oblique and it’s Fibres run anteriorly and superiorly
Internal oblique functions
Flexes vertebral column compresses abdo wall
Muscle of the abdominal: transverse abdominis
Runs horizontally deep to the internal oblique
Muscle of the abdominal wall: rectus abdominis
Lies either side of the lineage alba and separated by tendinous intersections
Aids in expiration
Muscle of upper limbs?
Pectoral girdle
Humerus
Deltoid
Biceps
Triceps
Muscles of upper limbs: wrist
Flexor carpi radialis
Flexor carpi ulnaris
Extensor carpi radialis
Extensor carpi ulnaris
Brevis
Four rotator cuff muscles
Subscapularis
Supraspinatus
Teres minor
Infraspinatus
Muscle of the lower limbs: thigh
Iliopsoas
Psoas major
Gluteus max, medius, minimus
Rectus femoris
Vastus lateralis, medialis, intermedius
Muscle that move the leg
Sartorius
Adductors
Muscle that move the foot and ankles
(Four)
Tibialis anterior
Peroneus longus
Gastrocnemius
Soleus
Features of a muscle cell
Sarcolemma
Nuclei
Myofibrils
Myofilaments
Sarcoplasmic reticulum
T-tubules
Types sutures (skull)
Coronal
Sagittal
Lambdoid
Squamous
Types sutures: coronal (skull)
Junction between frontal and parietal bones
Types of sutures: Sagittal (skull)
Junction between parietal bones
Types of sutures: lambdoid (skull)
Junction between the occipital and parietal bone
Types of Sutures: squamous (skull)
Junction between temporal and parietal bone
Three bones that make up the Cranial vault
Formed by the frontal parietal and occipital bones which are flat bones
Cranial base is made up of which bone?
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa
Cranial base is made up of which bone?
Anterior cranial fossa
Middle cranial fossa
Posterior cranial fossa
Vertebrae structure
Body
Vertebral arch
Vertebral foremen
Types of vertebral articulations
Intervertebral disc
Intervertebral foramina
Dorsal cavity structures
Brains cavity and spinal cavity
Dorsal cavity structures
Brains cavity and spinal cavity
The word anatomy means?
Derived from Greek and means to cut apart
Anatomy four orders cut apart
Position
Relations
Structure
Function
Digestive system
Starts at the mouth with a long tube and ends at the anus
Respiratory system
Allows you to breathe and includes the nose, air passageways and lungs
Four type of tissue
Epithelial
Connective tissue
Nervous tissue
Muscular tissue
Four functions of epithelium
Support and protection
Permeability
Sensation
Secretion
Pseudostratified epithelium
Comprises only a single layer of cells and has its cell nuclei positioned in a manner suggestive to stratified epithelium
Found in respiratory tract helps move mucus
Cells of connective tissue
Mesenchymal
Fibroblast
Macrophage
Adipocyte
Three main classified types of connective tissue
Connective tissue proper
Supporting connective tissue
Specialized connective tissue
Two types of connective tissue proper
Loose ct
Dense ct
Loose ct
Has more ground substance with few ct fibres
Ex adipose tissue
Loose ct
Has more ground substance with few ct fibres
Ex adipose tissue
Dense ct
Has less ground substance with more ct fibres
Ex: elastic tissue
Two types of supporting connective tissue
Bone and cartilage
Two types of specialized connective tissue
Blood and lymph nodes
Medullary cavity (bone)
Hollow part of bone that contains bone marrow
Epiphysis (bone)
Knobby enlarged regions at the end form joints and serve as attachment sites for tendons and ligaments
Metaphysis (bone)
Region between the diaphysis and epiphysis
Diaphysis (bone)
Elongated cylindrical shaft
Bones that make up the skull
Frontal
Sphenoid
Partietal
Occipital
Temporal
Foremen magnum (skull)
Allows the spinal cord to exit the cranial cavity
Occipital (skull)
Consoles articulate with the first bone in the neck
Temporal bones (skull)
Zygomatic process
External auditory meatus
Mastoid process
Temporal bones (skull)
Zygomatic process
External auditory meatus
Mastoid process
Sphenoid bone (skull)
Single bone known as keystone of skull joins the cranium and facial bones
Facial bones
Maxillary
Nasal
Zygomatic
Mandible
Parts of mandible
Body
Ramus
Angle
Vertebral arch
Extends into the spinous and transverse processes
Vertebral foramen
Houses the spinal cord
Intervertebral disc
Jelly filled donut acts as shock absorber
Intervertebral foramina
Allows passage of spinal cord
Cartilage found in intervertebral disc
Fibrocatilage
Rib consists of?
Head
Neck
Tubercle
Shaft
Costal groove
Angle
Pectoral girdle is made up of what bones
Clavicle
Scapula
Lower/upper limb bones made up of
Pelvic girdle
Femur
Tibia
Fibula
Ankle/foot
Three parts of the pelvic girdle
Ilium
Pubis
Ischium
Features of the pelvis
Greater sciatic notch
Lesser sciatic notch
Acetabulum
Obturator foramen
Obturator foramen
Passage for nerves and blood vessels
Acetabulum
Articulation with head of femur
Greater sciatic notch
Allows passage of major nerves and vessels
Lesser sciatic notch
Permits passage of structures from pelvic cavity to the genital region
Parts of femur
Head
Neck
Shaft
Parts of ankle and foot
Phalanges
Metatarsal bones
Tarsal bones
How many bones in ankle
7 tarsal
How many bones in foot
5 metatarsal bones
How many bones in toes
14 phalanges
Movements made at synovial joints
Gliding
Angular
Rotation
Special movements
Muscle involved in mastication (chewing)
Temporalis
Massester
Muscle that attach axial to pectoral girdle
Serratus anterior
Pectoralis minor
Trapezius
Muscles that attach pectoral girdle to humerus
Deltoid
Muscle that attach axial to arm
Pectoralis major
Latissimus Dorsi
Muscles that move the forearm
Biceps brachii
Triceps brachii
Muscle that move the wrist
Medial epicondyle
Flexor carpi radialis
Flexor carpi ulnaris
Muscles that move the leg
Quadriceps femoris
Sartorius
Patellar ligament
Quadriceps tendon
Adductors
Hamstring