Tissues And Specialised Cells
Overview
No single cell can beat like a heart, carry oxygen, or think. Those jobs need thousands of similar cells working together as a tissue, and organs such as the heart or brain are themselves built from several different tissues layered and combined for a shared purpose.
In this lesson you will learn how bone, muscle, blood, nervous tissue and epithelium each look under a light microscope and how their structure suits their job, then examine how the egg and sperm, the two most specialised cells in the human body, are each built for a single event: fertilisation.
Objectives
- Understand that cells are grouped into tissues and that tissues are organised into organs
- Describe the structure of bone, muscle (voluntary, involuntary and cardiac, as observed under a light microscope), blood, nervous tissue and epithelium (squamous and ciliated, with reference to cells lining the cheek and trachea)
- Describe the structure of cells specialised for reproduction, e.g. egg (ovum) and sperm and relate their structure to function
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Tissues And Specialised Cells. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which muscle type shows branched fibres joined by intercalated discs? A) Voluntary muscle B) Involuntary muscle C) Cardiac muscle D) Smooth muscle Answer: C
- Which type of epithelium lines the trachea? A) Squamous epithelium B) Ciliated epithelium C) Cardiac tissue D) Compact bone Answer: B
- What is the main function of a lymphocyte? A) Engulfing bacteria by phagocytosis B) Producing antibodies C) Carrying oxygen D) Clotting blood Answer: B
- Which structure at the tip of a sperm cell contains enzymes that digest a path into the egg? A) Flagellum B) Midpiece C) Acrosome D) Nucleus Answer: C
- A tissue is best described as: A) A single specialised cell B) A group of similar cells working together for a shared function C) Two or more different organs working together D) A structure made only of nervous tissue Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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