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Q9(e):
Name the type of joint between the following:-
(e) between cranial bones
Solution :
Anatomical Classification of Joints: Cranial Articulation
The articulation between the bones of the cranium (skull cap) is classified based on their structural mobility and histological composition. In human anatomy, these are defined as fibrous joints, specifically known as sutures.
Step 1: Structural Identification
Cranial bones are held together by dense, fibrous connective tissue. Unlike synovial joints, which allow for a wide range of movement, the joints between cranial bones are characterized by their inability to permit motion [Per the structural classification of joints].
Step 2: Functional Classification
Functionally, these joints are categorized as synarthroses. The term "synarthrosis" denotes an immovable joint, which is essential for the cranium to provide a rigid, protective enclosure for the brain [Per the functional classification of joints].
Step 3: Visual Representation of Cranial Sutures
Step 4: Summary of Biological Characteristics
| Feature | Description |
|---|---|
| Joint Type | Fibrous Joint (Suture) |
| Mobility | Non-movable (Synarthrosis) |
| Material | Dense fibrous connective tissue |
| Physiological Role | Cranial protection and structural integrity |
Final Solution: The joint between cranial bones is a fibrous joint, specifically termed a suture, which is functionally classified as a synarthrosis (immovable joint).
More Questions from Class 11 Biology Locomotion and Movement EXERCISES
- Q1: Draw the diagram of a sarcomere of skeletal muscle showing different regions.
- Q2: Define sliding filament theory of muscle contraction.
- Q3: Describe the important steps in muscle contraction.
- Q4(a): Write true or false. If false change the statement so that it is true. (a) Actin is present in thin filament
- Q4(b): Write true or false. If false change the statement so that it is true. (b) H-zone of striated muscle fibre represents both thick and thin filaments.
- Q4(c): Write true or false. If false change the statement so that it is true. (c) Human skeleton has 206 bones.
- Q4(d): Write true or false. If false change the statement so that it is true. (d) There are 11 pairs of ribs in man.
- Q4(e): Write true or false. If false change the statement so that it is true. (e) Sternum is present on the ventral side of the body.
- Q5(a): Write the difference between : (a) Actin and Myosin
- Q5(b): Write the difference between : (b) Red and White muscles
- Q5(c): Write the difference between : (c) Pectoral and Pelvic girdle
- Q6: Match Column I with Column II : Column I Column II (a) Smooth muscle (i) Myoglobin (b) Tropomyosin (ii) Thin filament (c) Red muscle (iii) Sutures (d) Skull (iv) Involuntary
- Q7: What are the different types of movements exhibited by the cells of human body?
- Q8: How do you distinguish between a skeletal muscle and a cardiac muscle?
- Q9(a): Name the type of joint between the following:- (a) atlas/axis
- Q9(b): Name the type of joint between the following:- (b) carpal/metacarpal of thumb
- Q9(c): Name the type of joint between the following:- (c) between phalanges
- Q9(d): Name the type of joint between the following:- (d) femur/acetabulum
- Q9(f): Name the type of joint between the following:- (f) between pubic bones in the pelvic girdle
- Q10(a): Fill in the blank spaces: (a) All mammals (except a few) have __________ cervical vertebra.
- Q10(b): Fill in the blank spaces: (b) The number of phalanges in each limb of human is __________
- Q10(c): Fill in the blank spaces: (c) Thin filament of myofibril contains 2 ‘F’ actins and two other proteins namely __________ and __________.
- Q10(d): Fill in the blank spaces: (d) In a muscle fibre $Ca^{++}$ is stored in __________
- Q10(e): Fill in the blank spaces: (e) __________ and __________ pairs of ribs are called floating ribs.
- Q10(f): Fill in the blank spaces: (f) The human cranium is made of __________ bones.
CBSE Solutions for Class 11 Biology Locomotion and Movement
Chapters in CBSE - Class 11 Biology
- The Living World
- Biological Classification
- Plant Kingdom
- Animal Kingdom
- Morphology of Flowering Plants
- Anatomy of Flowering Plants
- Structural Organisation in Animals
- Cell – The Unit of Life
- Biomolecules
- Cell Cycle and Division
- Transport in Plants
- Mineral Nutrition
- Photosynthesis
- Respiration in Plants
- Plant Growth and Development
- Digestion and Absorption
- Breathing and Exchange of Gases
- Body Fluids and Circulation
- Excretory Products and Elimination
- Neural Control and Coordination
- Chemical Coordination and Integration
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