Tissues Flashcards
Epathelial Definition
- Covers exposed surfaces
- Lines internal passageways and chambers
- Forms secretory glands
Connective tissue defenition
- Fills internal spaces
- Provides structural support
- Stores energy
3 Types of connective tissue
- fluid
- proper
- supporting
CONNECTIVE TISSUE PROPER
DENSE:
- dense regular
- dense irregular
- dense elastic
LOOSE:
- areola tissue
- adipose tissue
- reticular
SUPPORTING CONNECTIVE TISSUES
BONE:
CARTILAGE:
- fibrocartilage
- hyaline cartilage
- elastic cartilage
FLUID CONNECTIVE TISSUES
BLOOD:
LYMPH:
FUNCTIONS OF CONNECTIVE TISSUE
- establish a structural framework for the body
- transport fluids and dissolved materials
- protect delicate organs
- support surround and interconnect other types of tissue
- store energy (esp in form triglyceride)
- defend body from invading micro - organisms
Epithelial Tissue includes :
Includes:
- Epithelia
- Glands
- exocrine glands
- endocrine glands
Function of epithelial tissue
- provides physical protection
- control permeability
- provide sensation
- produce specialised secretions
3 kinds of muscle tissue
Skeletal
Cardiac
Smooth
Nervous tissue parts
Dendrites: Receive information
Cell Body: Large nucleus - information processing - lack of ventriole
Neuralgia Functions
- Maintain physical structure of nervous tissue
- Repair nervous tissue frame work after injury
- Perform phagocytosis
- Provide nutrients to neurons
- Regulate the composition of the inertestorial fluid surrounding neurons
Studying anatomy in NZ
- Bodies form bequests
- Informed consent from people + families that can be withdrawn
- Plasternated prosections - process that removes h20 and replaces with silicone - no harm to you - lasts a long time
Human Tissue Act 2008
- Voluntary donations of bodies
- Requires dual consent by donor + imidiate family member
- Most held for 18 months, but some kept for longer periods for teaching + research
Sensory and motor pathways
Sensory receptors ——-> sensory output over cranial nerves ——-> reflex centres in brain ——-> motor output over cranial nerves ——-> EFFECTORS (muscle, adipose tissue, glands)
Sensory receptors ——-> sensory output of spinal nerves ——-> reflex centres in spinal cord ———> motor output over spinal nerves——-> EFFECTORS (muscles, adipose tissue, glands)
Formation of Tissues
Atoms combine to form molecules, which interact to form, cells that secrete and regulate ———> extra cellular material and fluids, combine to form tissues.
2 key fibres in connective tissue proper
- collagen fibres
- elastic fibres
4 types of tissues
Connective
Epithelial
Muscle
Nervous
Connective tissue types
Proper
Fluid
Supporting
Connective tissue proper
Loose:
- Areolar
- Adipose
- Reticular
Dense
- Dense regular
- Dense irregular
- Elastic
Fluid Connective tissues
- Blood
- Lymph
Supporting connective tissue
Bone:
Cartilage:
- hyaline cartilage
- elastic cartilage
- fibrocartilage
Tissue %’s
Muscle = 50%
Connective = 45%
Epithelial = 3%
Nervous tissue = 2%
Functions of neuralgia
- maintain physical structure of nervous tissue
- repair nervous tissue frame work after injury
- perform phagocytosis
- provide nutrients to neurons
- regulate the composition of the interstitial surrounding neurons
Nervous Tissue - how it works +effectors
Sensory receptors ——>sensory input over cranial nerves ——-> reflex centres in brain ——> motor output over cranial nerves.
Effectors :
- Muscles , glands , adipose tissue
Definition muscle tissue:
- Contracts to produce movement
- Includes, skeletal, smooth, cardiac
Definition of nervous tissue
- Conducts electrical impulses
- Carries information
Tissue definition
A group of cells or fluid that work together to perform a specific job in the body
Positive feedback
Homeostatic system where the control variables move further away from the set point. Physiologic positive feedback systems have an end-point
