Lecture 1-5 + Workbook 1 Flashcards
What are the 4 main tissue types
Epithelial
Connective
Muscle
Nervous
Muscles can only
shorten in length (contract)
*it cannot make itself longer
Label a Typical Neuron
A. Dendrite
B. Neuron
C. Axon
D. Myelin Sheath
E. Node of Ranvier
F. Axon Terminal
Do Glial cells transmit electrical impulses
No
The synapse is point at where the neuron will
excite another structure
A neuron can synapse to
Another neuron
Glands (Neuroglandular synapses)
skeletal muscle (Neuromuscular synapses)
Afferent meaning
Ascending information sensing internal and external envrionment + gut and ends up in the brain
Efferent meaning
Exciting from the CNS and goes somewhere else
CNS
Brain + Spinal Cord
PNS
All nerves outside the CNS to sense information or connect to muscles and glands
How is the Autonomic system split
Sympathetic ‘fight or flight’
Parasympathetic ‘ rest & repose’
Sympathetic Functions
= Adrenaline flowing
* Increased heart rate, blood pressure
* Reduced digestive and urinary function
* Pupil dilation
* Sweating
* Dilate airways
Parasympathetic Functions
Decreased metabolic rate, heart rate, blood pressure
Constrict airways
Stimulates digestive and urinary functions
Pupil constriction
The first cellular movement that occurs in the epiblast is
Gastrulation
Gastrulation forms the three primary germ layers
ectoderm (outer layer)
mesoderm (middle layer)
endoderm (inner layer)
The Ectoderm gives rise to the
Nervous System = CNS + PNS and skin
The Mesoderm gives rise to the
Connective Tissue
Cardiovascular system
Blood
Bone marrow
Skeletel muscle
Skeleton
Reproductive organs
Lining of body cavities
The Endoderm gives rise to the
Epithelium of the gut
Respitatory system epithelium
The main functions of the skeletel system
scaffolding of support + secondary and critical functions
Support and protect
Movement
Produce blood cells - red bone marrow
Mineral storage- calcium & phosphorus
What are the 2 divisions of the skeletal system
Axial: skull, spinal cord and thorax
Appendicular: arms, legs
The two main types of cartilage are
Hyaline: most common, allows for movement in joints
Fibrocartilage: in jaw
The main defining feature of connective tissue is
Extracellular matrix
