1. A tissue is a grouping of like cells working together. (para 2-1)
2. a. Epithelial.
3. Epithelial tissue is tissue that covers surfaces and lines cavities. (para 2-4)
4. If there are several layers and if the outer layer consists of flat cells, then the tissue is called a stratified squamous epithelium. (para 2-6b)
5. Connective tissue is tissue that supports other tissues, holds tissues together, or fills spaces. (para 2-7a)
6. The term used for material found among and outside the cells of connective tissue is matrix. (para 2-7b)
7. The four major types of connective tissue (CT) are fibrous CT, cartilage CT, bone CT, and fat CT. (para 2-8)
8. Characteristic cells of fibrous CT are fibroblasts. Cartilage cells are also called chondroblasts. Cells that make and repair bone are osteoblasts. Cells that tear down and remove bone are osteoclasts. (paras 2-9a, 2-10a, 2-11a)
9. The matrix of fibrous CT consists of fibers. The matrix produced by cartilage cells appears homogeneous and amorphous. Fat CT has a matrix of lipid.
10. Two major types of fibrous connective tissue (FCT) are loose areolar FCT, which is a filling substance around most organs and tissues of the body, and dense FCT, which is found, for example, in ligaments and tendons. (para 2-9d)
11. Cartilage CT. (para 2-10b)
13. Muscle tissues are tissues whose contracting elements enable muscles to produce motion. (para 2-14)
14. Smooth muscle tissue. (para 2-15c)
15. Cardiac muscle tissue. (para 2-15b)
16. Skeletal muscle tissue. (para 2-15a)
17. Nervous tissue is a collection of cells that respond to stimuli and transmit information. (para 2-16)
18. Nervous tissue. (para 2-16)
19. A nerve cell, which actually picks up and transmits a signal, is also known as a neuron. (para 2-17a)
20. The supporting structure of the nervous system is known as the glia, or the neuroglia. (para 2-17b)
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