Unit One Flashcards
The science of body functions
Physiology
The science of body structures and the relationships among them
Anatomy
Condition of equilibrium or balance in the body’s internal environment due to the interplay of the body’s regulatory processes
Homeostasis
In the feedback system what is:
The Receptor?
Control Center?
Effector?
Receptor: Body structure that monitors changed in a controlled condition
Control Center: Where the receptor sends information to, to establish a range of valued to maintain homeostasis (the brain)
Effector: Where control center sends info to, will produce a response in order to maintain homeostasis
Anatomical term for Skull
Cranial
Anatomical term for Face
Facial
Anatomical term for Head
Cephalic
Anatomical term for Neck
Cervical
Anatomical term for Armpit
Axillary
Anatomical term for Arm
Brachial
Anatomical term for Front of Elbow
Antecubital
Anatomical term for Forearm
Antebrachial
Anatomical term for Wrist
Carpal
Anatomical term for Palm
Palmar
Anatomical term for Toes / Fingers
Digital or Phalangeal
Anatomical term for Thigh
Femoral
Anatomical term for Anterior Knee
Patellar
Anatomical term for Leg
Crural
Anatomical term for Ankle
Tarsal
Anatomical term for Foot
Pedal
Anatomical term for Forehead
Frontal
Anatomical term for Eye
Orbital or ocular
Anatomical term for Ear
Otic
Anatomical term for Cheek
Buccal
Anatomical term for Nose
Nasal
Anatomical term for Mouth
Oral
Anatomical term for Chin
Mental
Anatomical term for Breastbone
Sternal
Anatomical term for Breast
Mammary
Anatomical term for Navel (bellybutton)
Umbilical
Anatomical term for Hip
Coxal
Anatomical term for Groin
Inguinal
Anatomical term for Hand
Manual
Anatomical term for Pubis
Pubic
Anatomical term for Back of Hand / Top of Foot
Dorsum
Anatomical term for Chest
Thoracic
Anatomical term for Abdonimal
Abdomen
Anatomical term for Pelvis
Pelvic
Anatomical term for Base of Skull
Occipital
Anatomical term for Top of Shoulder
Acromion
Anatomical term for Shoulder Blade
Scapular
Anatomical term for Spinal Column
Vertebral
Anatomical term for Back of Elbow
Olecranal
Anatomical term for Between Hips (Posterior)
Sacral
Anatomical term for Buttock
Gluteal
Anatomical term for Back of Knee
Popliteal
Anatomical term for Calf
Sural
Anatomical term for Sole of Feet
Plantar
Anatomical term for Back
Dorsal
Anatomical term for Loin (lower back)
Lumbar
Anatomical term for Heel
Calcaneal
Superior vs. Inferior
Superior: towards the top of the head
Inferior: Away from the head
Anterior vs. Posterior
Anterior: Front of the body
Posterior: Back of the body
Medial vs. Lateral
Medial: Towards the midline
Lateral: Away from the midline
Directional term for being between two structures
Intermediate
Ipsilateral vs. Contralateral
Ipsilateral: On the same side of the body
Contralateral: On opposite sides of the body
Proximal vs. Distal
Proximal: Nearer to the attachment of the limb to the trunk
Distal: Further from the attachment of the limb to the trunk
Superficial vs. Deep
Superficial: Towards the surface of the body
Deep: Away from the surface of the body
Cranial vs. Caudal
Same thing as Superior vs. Inferior
What is the Pleural Cavity?
Cavity containing the lungs
What is the Pericardial Cavity?
Cavity containing the heart
What is the Mediastinum?
Cavity in-between the sternum, lungs, and vertebrae. From the neck to the diaphragm
Contains: heart, thymus gland, esophagus, trachea, and large blood vessels
What does the Abdominal Cavity contain?
Stomach, spleen, liver, gallbladder, small intestine, and most of large intestine
What does the Pelvic Cavity contain?
Urinary bladder, part of the large intestine, and internal organs of reproductive system
Name Abdominopelvic Regions from top right to bottom left
Right Hypochondriac, Epigastric, Left Hypochondriac
Right Lumbar, Umbilical, Left Lumbar
Right Inguinal, Hypogastric, Left Inguinal
What does Epithelium Tissue cover or line?
Body surfaces and lines hollow organs, body cavities, and ducts. Also forms glands
Where are cell junctions found?
Lateral surface of epithelial tissue
Layers of the basement membrane and about them?
Basal Lamina: Closer to and secreted by the epithelial cells. Contains proteins and glycoproteins
Reticular Lamina: Closer to connective tissue and contains fibrous proteins formed by the connective tissue cells called fibroblasts
Function of the basement membrane:
Attach and support the overlying epithelial tissue (to connective tissue)
What is Diabetes Mellitus?
Basement membranes of small blood vessels and capillaries thickens. Leading to decreased blood flow, decreased O2 and nutrients, causing cell death and worsen to stuff like blindness or loss of sensation in fingers and toes
Function of Simple Epithelium Tissues:
Movement such as:
Diffusion, osmosis, filtration, secretion, and absorption
Function of Stratified Epithelium Tissues:
Protection
Function of Squamous Epithelium:
Movement of substance
Function of Cuboidal Epithelium:
Secretion and absorption
Function of Columnar Epithelium:
Protection, secretion and absorption
Function of Transitional Epithelium:
Distention (stretching)
What cells are found in Connective Tissue?
Fibroblasts, Macrophages, Plasma cells, Mast cells, Adipocytes, White blood cells
What do Fibroblasts do?
Secrete the fibers and ground substance
What do Macrophages do?
Large WBC
Maintain the connective tissue by engulfing bacteria and cellular debris
What do Plasma Cells do?
Secrete antibodies in the immune response
What are Adipocytes?
Fat cells that store trigycerides
What do Mast cells do?
Decrease inflammation and kill bacteria
What do White Blood Cells do?
Combat foreign substances
What is Extracellular Matrix composed of?
Mostly water, glycosaminoglycans (to trap water), protein fibers (collagen, elastic, reticular)
Explain Collagen Fiber:
Strongest fiber, flexible but resistant to stretching
Abundant in bone, cartilage, tendons, and ligaments
Explain Elastic Fiber:
Smaller than collagen fiber but still strong. Flexible and able to stretch 150% its normal size
Abundant in skin, blood vessels, and lung tissue
Explain Reticular Fiber:
Very thin fibers that consist of collagen. Provides strength and support.
Abundant in the basement membrane, covering of organs (stroma), and smooth muscle tissue
Where is Areolar Connective Tissue found?
Subcutaneous layer and dermis deep in the skin, around blood vessels, nerves and organs
Function of Areolar Connective Tissue:
Provide strength, elasticity, and support
Where is Adipose Tissue found?
Subcutaneous layer, around heart and kidneys, yellow bone marrow, padding of joints
What is the function of Adipose Tissue?
Decrease heat loss, provide quick energy when needed, supports and protects
Where is Reticular Connective Tissue found?
Stroma of liver, spleen, lymph nodes and basement membrane
What is the function of Reticular Connective Tissue?
Protection and filtration
(filter blood cells in the spleen and microbes in the lymph nodes)
Where is Dense Regular Connective Tissue found?
Tendons and ligaments
What is the function of Dense Regular Connective Tissue?
Provides strong attachment between structures
Where is Dense Irregular Connective Tissue found?
Fascia (tissue beneath skin around muscle and organs), deep dermis of skin, periosteum (bone), joint cavities, pericardium of the heart and its valves
What is the function of Dense Irregular Connective Tissue?
Provide strength
Where is Elastic Connective Tissue found?
Lung tissue, large artery walls, trachea, and ligaments around the spine
What is the function of Elastic Connective Tissue:
Allows stretching of structures and organs
Where is Hyaline Cartilage found?
Ends of long bones, nose, trachea
What is the function of Hyaline Cartilage?
Provide smooth surfaces for movement at the joints, and flexibility and support
Where is Fibrocartilage found?
Pubic symphysis, intervertebral disc, menisci of knee
What is the function of Fibrocartilage?
Support and fusion of tendons into cartilage
Where is Elastic Cartilage found?
Epiglottis, external ear, eustachian tubes
What is the function of Elastic Cartilage?
Support and maintains shape
What are the four parts of Compact Bone and their composition/functions?
Lamellae: Calcium and phosphate gives bone its hardness and collagen fibers provides strength
Lacunae: small spaces between the lamellae that contain mature bone cells (osteocytes)
Canaliculi: Network of canals that connect lacunae to provides routes for nutrients to reach osteocytes and remove their waste
Central Haversian Canal: Contains blood vessels and nerves
What is the function of Compact Bone?
Support body, protect organs, store blood and nutrients, houses blood forming tissue
What does Liquid Connective Tissue (blood) consist of?
Blood plasma, red blood cells, white blood cells, and platelets
What is the function of the cells within blood?
RBC: Transport oxygen and carbon dioxide
WBC: Rid the body of foreign substances
Platelets: Clot blood
What is the function of Muscular Tissue?
Produce body motion, maintain posture, generate heat
Describe Skeletal Muscle Tissue:
Multinucleated, striated, voluntary movement
Describe Cardiac Muscle Tissue:
One nucleus, striated, involuntary movement, attach end-to-end via intercalated discs
Describe Smooth Muscle Tissue:
Non-striated, one centrally located nucleus, involuntary movement
What is the function of Smooth Muscle Tissue?
Constrict blood vessels to regulate blood pressure, constrict airways in allergic reaction, constrict certain organs
What is the function of Nervous Tissue?
Conduct nerve impulses to other neurons, muscle fibers or glands
What cells provide support to neurons?
Neuroglia cells
Composition of neurons and their functions:
Dendrites: branched structure that receives inputs and sends info to cell body
Cell body: processes information
Axon: long output portion that sends the info to another cell’s dendrites
What is the function of the Integumentary System?
Protection, maintain constant body temp, provide sensory information about surrounding environment, Vitamin D Synthesis
What is the largest organ of the body?
Skin
What tissue is the Epidermis and Dermis made of?
Epidermis: Epithelial Tissue
Dermis: Connective tissue
What is subcutaneous layer composed of and its function?
Adipose Tissue Storage depot for fat
Blood vessels and nerves receptors
Cell types in the Epidermis and their functions:
Keratinocytes: Produce keratin, protects the skin from heat, microbes, chemicals, and excess water
Melanocytes: Produce yellow-red or black-brown pigment for skin color. Absorbs UV light, protection
Langerhans cells: Come from red bone marrow and functions to attack invading microbes
Merkel cells: sensory receptor, receives touch stimuli
Layers (strata) of the epidermis from deepest to superficial:
Stratum Basale
Stratum Spinosum
Stratum granulosum
Stratum Lucidum (only in “thick skin”
Stratum Corneum
Where does apoptosis (cell death) start to occur within the epidermis?
Stratum Granulosum
What happens with psoriasis?
Keratinocytes divide and move to the surface quicker (about a week instead of a month). The treatment creams inhibit cell division and growth to stop this
Regions of the Dermis and what they’re composed of:
Papillary: Areolar connective tissue with elastic fibers, capillaries, touch receptors, and free nerve endings (pain receptors)
Reticular: Dense irregular connective tissue with collagen and elastic fibers, adipose cells, hair follicles, nerves, sebaceous and sweat glands
Sensory Receptors and what they detect:
Free nerve endings: pain
Meissner’s corpuscle: changes in texture, slow vibration, and light touch
Pacinian corpuscle: rapid vibration, deep pressure
Merkel’s discs: sustained touch and pressure
Hair Root Plexus: position changes of hair
What pigments make the color of skin?
Melanin, hemoglobin, and carotene
Most common skin cancers:
Basal Cell Carcinoma
Squamous Cell Carcinoma
Melanoma
What is Carotene
Yellow-orange pigment found in carrots/egg yolks
Eating too much food with a lot of Carotene can turn your skin yellow-orangish
What happens with Albinism?
Body unable to produce melanin because tyrosine (amino acid) is not being synthesized = no melanin production
What happens with Vitiligo?
Partial or complete loss of melanocytes in areas leave large white batches
What is Cyanosis?
Blue color of skin due to decreased blood circulation (I.E less O2)
What is Jaundice?
Yellowish color of the skin to build up of bilirubin in blood (common in liver disease)
What is Erythema?
Redness of skin due to the dilation of capillaries. Common in exposure to heat, infection, inflammation, allergies, high BP, or alcoholism
What is Pallor?
Paleness of the skin due to decreased blood flow may be caused from shock or anemia
What is the function of hair?
Protection
What is hair made up of?
Dead keratinized cells bonded together by extracellular proteins
What is the Papilla of the hair made of?
Areolar Connective Tissue and blood vessels and nerves
Why does hair turn gray or white with old age?
The melanocytes die off, normally due to lack of blood flow to the papilla
What are sebaceous glands and their function?
Oil glands, normally connected to the hair
Function: Secrete sebum, keeps hair from dying and becoming brittle, prevent evaporation of water, inhibits growth of certain bacteria
What is acne?
Inflammation of the sebaceous gland cause by bacteria getting into the gland. Causing whiteheads
What are Eccrine glands?
Sweat glands, active right after birth, used to regulate and release excess heat in the body
What are Apocrine glands?
Sweat gland activated around puberty. Normally connected to hair follicle. Stimulated with stress, excess activity, sexual excitement. Found in armpits, groin, genitals. Leads to body order.
What is the function of finger nails?
Protect the phalanges
Where is the Hyponychium located and what is it composed of?
Located below the free edge of the nail. Thickened layer of stratum corneum, helps with attachment of the nail
What produces the nail body?
The nail root
What does the nail matrix do?
Helps form the nail bed
What is the Eponychium?
The cuticle of nails
What is the white area of nails called?
Lunula - white because vessels are obscured
What causes clubbing of fingers to occur?
Lack of O2 (chronic hypoxia) or lung cancer
What causes Terry’s nails?
Liver issues - Cirrhosis, disease
Congestive heart failure
Diabetes
What can cause pitting of nails?
Psoriasis
What causes Koilonychia (spoon nails)?
Iron deficiency
Why is vitamin D important?
Allow us to absorb calcium in GI tract - need calcium to strengthen bones, produce nerve impulses, blood clotting, muscle contraction
What are the phases of deep wound healing?
- Inflammatory phase: blood clots to unite edges of wound
- Migratory phase: Clot becomes a scat. Fibroblasts and WBC enter site to deposit collagen fibers and clean wound. Blood vessels begin to regrow
- Proliferation phase: Regrowth of epithelial cells beneath the scab. Fibroblasts continue to deposit collagen fibers and blood vessels continue to develop
- Maturation phase: Epidermis and dermis is restored, collagen fibers become more organized, and scab comes off