Scribd
Upload
551 views3 pages

Muscular System - Worksheet

The human body has around 600 muscles that perform various functions like movement, posture, heat production and more. There are three main types of muscles - skeletal muscles which are striated and under voluntary control, smooth muscles which are involuntary and found in organs, and cardiac muscle which is only found in the heart. Skeletal muscles are further divided into red and white muscles based on their characteristics. The document then describes the mechanism of skeletal muscle contraction and lists the major muscles grouped by regions of the body.

Uploaded by

s
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
551 views3 pages

Muscular System - Worksheet

The human body has around 600 muscles that perform various functions like movement, posture, heat production and more. There are three main types of muscles - skeletal muscles which are striated and under voluntary control, smooth muscles which are involuntary and found in organs, and cardiac muscle which is only found in the heart. Skeletal muscles are further divided into red and white muscles based on their characteristics. The document then describes the mechanism of skeletal muscle contraction and lists the major muscles grouped by regions of the body.

Uploaded by

s
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 3

2.

MUSCULAR SYSTEM

 human body has around 600 muscles


 functions:
o ______________________________
o ______________________________ - sitting and standing
o ______________________________
o ______________________________ - almost 85% is produced by muscles
o ______________________________ - tongue, lips
 muscle types

Type Characteristic Shape


- ______________shape
- ______________ - 1 central nucleus
- make up your internal organs
Smooth (uterus, digestive tract, blood
vessels...) EXCEPT _________
- slow and rhythmical contractions

- ______________ – conscious
control - ______________
- 40% of adult bodyweight - Multiple nuclei
- Striated thanks to muscle structure - Fibres create bundles and bundles
of myosin and actin create muscle
- 2 types:
Skeletal
o Red muscles –
_________vascularized; slow-
twitch muscles – long work
o White muscles -
_________vascularized; fast-
twitch muscles – short work
-1 nucleus per cell
-______________shape

- ______________
Cardiac - Found only in heart
- Controlled by medulla oblongata

 Mechanism of contraction of skeletal


muscle
o Parts: muscle fibres→ fascicle
→muscle

13
 Muscles are divided into regions:
o Muscles of head and neck
1. Temporalis
2. Frontalis
3. Orbicularis oculi
4. Orbicularis oris
5. Zygomaticus
6. Masseter
7. Buccinators
8. Trapezius
9. Sternocleidomastoid

o Muscles of torso (chest, abdomen, back, pelvis)


10. Pectoral muscles
11. Rectus abdominis
12. External abdominal oblique
13. Linea alba
14. Latissimus dorsi
15. Gluteus maxiumus
16. Trapezius

13
o Muscles of upper limb
17. Deltoid
18. Biceps brachii
19. Triceps brachii
20. Muscles of forearm
21. Muscles of hand

o Muscles of lower limb


22. Sartorial muscle
23. Quadriceps femoris
24. Biceps femoris
25. Gastrocnemicus
26. Tibialis anterior
27. Soleus
28. Muscles of foot

13

You might also like