Summary
Compleate and well detailed summary of muscular- nervous tissue
- Course
- Institution
This will help you to undestand fully how the mucle and nervous tissue works
[Show more]
Seller
Follow
laupeb
Content preview
Cells To LifeWeek 6 Notes
Tissue Histology III
(Epithelial (glandular/membrane), Connective, Muscle, Nervous)
MUSCLE AND NERVOUS TISSUE
Muscle Tissue:
• 3 Types
o Skeletal
§ Attaches to bone for movement (voluntary)
§ Long, Cylindrical
§ Multinucleated
§ Obvious striations àsarcomeres.
o Smooth
§ In the walls of visceral organs – eg. GI
tract/urinary tract/birth canal
§ Spindle-shaped cells
§ Central nuclei
§ No striations à no sarcomeres
§ Cells arranged closely to form sheets (often
opposing-laterally perpendicular)
§ Usually involuntary – Controlled by the
autonomic nervous system
o Cardiac
§ Makes up the heart.
§ Long, Branched, Cylindrical
§ Striations à sarcomeres
§ Usually single-nucleated
§ Intercalated discs – cell membranes of 2
adjacent cells bound mechanically
(desmosomes), chemically & electrically (gap
junctions). Essentially makes the entire heart
one single muscle.
§ Involuntary – controlled by autonomic nervous
system
www.MedStudentNotes.com
, • Functions:
o Movement (specialised for contraction)
o Maintains posture
o Stabilises joints
o Generates heat
Contractile Stuff:
• Contractile Proteins Actin & Myosin à Myofilaments:
- Molecular Level
- Form assemblies within muscle cells that slide over each other resulting in contraction
o known as myofilaments (muscle-filaments) and are of 2 Types:
§ Actin
• Thin Filaments
• Helical Structure
§ Myosin
• Thick Filaments
• More complex structure àthicker
Myofilaments (Actin & Myosin)
www.MedStudentNotes.com
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller laupeb. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
56326 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now