Lect. 10: Histology II (Connective Tissue Proper)

Questions and Answers

Which type of connective tissue is characterized by a semi-solid ground substance?

Loose connective tissue

Cartilage

Dense connective tissue

Connective tissue proper (correct)

Vascular connective tissue has a solid or rubbery ground substance.

False

What are the three types of muscle tissue?

Skeletal, cardiac, and smooth

The ground substance of supporting connective tissue is _______.

solid or rubbery Signup and view all the answers

Match the following types of cartilage with their characteristics:

Hyaline cartilage = Most common type of cartilage Elastic cartilage = Contains many elastic fibers Fibrocartilage = Highly durable and absorbs shock Signup and view all the answers

What type of muscle tissue is characterized by having a multinucleated structure?

Skeletal muscle Signup and view all the answers

Cardiac muscle fibers are unbranched.

False Signup and view all the answers

Which type of muscle tissue is found in the walls of the heart?

Cardiac muscle Signup and view all the answers

Skeletal muscle is _ in action, while smooth muscle is _ in action.

voluntary, involuntary Signup and view all the answers

Match the muscle types to their corresponding characteristics:

Skeletal muscle = Striated, voluntary, multinucleated Smooth muscle = Unstriated, involuntary, uninucleated Cardiac muscle = Striated, involuntary, branched Signup and view all the answers

Study Notes

Classification of Connective Tissue

Connective tissues are categorized based on the type of ground substance (matrix).
Three main types:
- Connective tissue proper: Contains a gelatinous or semi-solid ground substance.
- Vascular or fluid connective tissue: Features a fluid or liquid ground substance.
- Skeletal or supporting connective tissue: Composed of a solid or rubbery ground substance.

Histology of Loose and Dense Connective Tissues

Loose connective tissue: Characterized by a flexible structure, allowing for the support and cushioning of organs.
Dense connective tissue: Known for its tightly packed fibers, providing strength and resistance to stretching forces.

Overview of Cartilage

Cartilage is a resilient and flexible connective tissue essential for various body structures.
Three types of cartilage:
- Hyaline cartilage: Provides a smooth surface for joint movement and flexibility.
- Elastic cartilage: Contains more elastin fibers, enhancing flexibility; found in structures like the ear.
- Fibrocartilage: Contains dense fibers, making it tough and supportive; found in intervertebral discs.

Muscular Tissue

Muscular tissues are composed of highly cellular and well-vascularized cells responsible for body movement.
Muscle cells contain myofilaments composed of actin and myosin, facilitating contraction.
Three types:
- Skeletal muscle:
  - Cylindrical shape and striated appearance.
  - Multinucleated with peripheral nuclei.
  - Voluntary control, fatigue quickly, found in limbs and body wall.
- Smooth muscle:
  - Spindle-shaped and unstriated.
  - Uninucleated with central nuclei.
  - Involuntary action, fatigue-resistant, located in gastrointestinal tract (GIT) and glands.
- Cardiac muscle:
  - Cylindrical and striated, with branched fibers.
  - Uninucleated and central nuclei present.
  - Involuntary action, fatigue-resistant, found in the heart wall.
  - Intercalated disks are present, facilitating communication between cells.

Description

This quiz focuses on the classification of connective tissues, particularly the connective tissue proper, which has a gelatinous or semi-solid ground substance. Students will explore the characteristics and functions of different types of connective tissues. Test your understanding of this essential histology topic.