Unit 1: Orientation To The Body Flashcards
Superior
Position above another body part, towards head
Inferior
Position below or lower than another body part, towards feet
Medial
Middle or direction towards middle of body
Lateral
Side or direction toward side of body
Proximal
Limb position closest to point of attachment on trunk of body
Distal
Limb position further away from point of attachment on trunk of body
Deep
Position farther from surface of body
Superficial
Position closer to surface of body
Saggital plane
Plane that divides body vertically into left and right sides
Frontal/Coronal Plane
Plane that divides body into anterior (front) and posterior (back) portions
Transverse Plane
Plane that divides body horizontally into upper and lower portions
Homeostasis
Ability to maintain a constant internal environment in response to changing environment
Negative feedback
Has a stimulus, sensor, control center, and effector which trigger feedback that is not excessive
Posterior
Position towards backside of body
Anterior
Position towards front of body
Give an example of negative feedback loop:
Blood glucose levels get low, glucagon is released to bring levels up to equilibrium
Give an example of positive feedback loop:
Breastfeeding; lactation is induced by child feeding which includes further lactation until child stops feeding
Anatomy
Study of structures and shape of the body and body parts
“Form”
Physiology
Study of the functions of the body and body parts
“Function”
Levels of organization of the body:
Atoms, molecules, organelles, cells, tissue, organs, organ systems, full organism
Function of receptor
“Sensor,” detects problem
Function of sensory pathway
Brings info to control center
Control/Integration center
Brain and spinal cord; figures out what to do to maintain homeostasis
Function of motor pathway
Pathway from the control center to effector
Function of effector
Responds and returns body to equilibrium
Integumentary system consists of:
Hair, nails, sweat glands, oil glands, epidermis, dermis, subcutaneous, and nerves
Functions of the integumentary system:
Waterproof barrier Cushioning and protection Regulates body temperature UV protection and Vitamin D Self healing Detects pressure, pain, etc. Communication
Skeletal system consists of:
Bone, cartilage, ligaments, and joints
Functions of the skeletal system:
Supports and protects organs Framework for movement pH balance Mineral storage Hematopoiesis (blood cell production)
Muscular system consists of:
Muscles and tendons
Functions of muscular system:
Shorten and contract to produce movement
Body temperature regulation
Protection
Nervous system consists of:
Brain, spinal cord, nerves, and sensory receptors
Functions of the nervous system:
Control system that sends electrochemical messages
Sensory output
Motor output
Integration
Axillary
Armpit
Acromial
Tip of shoulder
Brachial
Arm
Carpal
Wrist
Cervical
Neck
Digital
Fingers and toes
Femoral
Thigh
Frontal
Forehead
Orbital
Eye area
Patellar
Knee cap
Tarsal
Ankle
Thoracic
Chest
Dorsal
Back
Plantar
Bottom side of foot
Deltoid
Whole shoulder
Gluteal
Buttocks
Lumbar
Lower back
Occipital
Back of the head