Copy of Body Systems and Tissue Types 1 (5/28/2026)

Last updated about 3 hours ago

15 questions

Copy of Body Systems and Tissue Types 1 (5/28/2026)

Last updated about 3 hours ago

15 questions

Question 1

02:33

Question 2

03:06

Question 3

03:32

Question 4

04:37

Question 5

05:18

Question 6

06:08

Question 7

06:28

Question 8

07:15

Question 9

07:42

Question 10

08:17

Question 11

08:39

Epithelial Tissue

Epithelial tissue is made up of a layer or layers of tightly packed cells that line the surfaces of the body. The largest example of epithelial tissue (also the largest organ in the human body) is the skin. Mammalian skin consists of stratified epithelium, which has several layers of cells. The outermost layers of cells, called squamous cells, are flat plate-like cells, while the deeper layers are roughly cube shaped and called cuboidal cells. Epithelial tissue has multiple functions, but it serves primarily to protect, absorb, and secrete. As you probably already know, our skin organ covers our entire body and protects underlying tissues from bacteria, chemicals, and other injury. Epithelial cells also line the small intestine where they absorb nutrients, and similar cells in the glands secrete enzymes and hormones.

2.5

Muscle Tissue
Muscle tissue encompasses not only the muscles, such as those in our legs or fingers, that we actively control, but also the tissue that forms most of our internal organs. There are three types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscle tissue forms what we think of as our muscles; it is attached to our bones by our tendons and can be relaxed or contracted voluntarily. Similar in structure to skeletal muscle, cardiac muscle is found exclusively in the walls of the heart. The major difference, however, is that cardiac muscle is involuntary and cannot be actively controlled. Similarly, smooth muscle, which forms the muscle layers in internal organs such as the digestive tract and bladder, is an involuntary tissue. Smooth muscle tissue controls slow involuntary movements such as stomach wall contractions and the contractions of arteries to regulate blood flow.

2.5

Nervous Tissue
Nervous tissue is composed of two primary cell types: neurons and glial cells. Neurons are electrically active cells responsible for computation and communication within the nervous system, releasing chemical signals to target cells. Glial cells, on the other hand, provide support and maintenance functions, including insulation, nutrition, and waste removal.

Nervous tissue can be divided into two systems: the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS consists of the brain and spinal cord, while the PNS comprises branching peripheral nerves. The CNS is responsible for integrating and processing information, whereas the PNS transmits signals between the CNS and the rest of the body.

In the CNS, four types of neuroglial cells are found: astrocytes, microglial cells, ependymal cells, and oligodendrocytes. These cells play crucial roles in maintaining the environment for neurons, removing waste, and providing insulation for axons. In the PNS, satellite glial cells and Schwann cells perform similar functions.

Nervous tissue, also known as neural tissue, is responsible for regulating and controlling various bodily functions and activities. It enables sensation, movement, emotions, communication, thought processing, and memory, making it essential for overall bodily function and well-being.

Connective Tissue
Connective tissue connects, supports, or separates other tissues and organs. Connective tissue proper, a form of connective tissue, can be either loose or dense. Adipose tissue, or fat, is loose connective tissue, while tendons and ligaments, composed of collagen, are examples of dense connective tissue. Other forms of connective tissue include blood (fluid connective tissue) and cartilage and bone (both forms of supporting connective tissue).

Copy of Body Systems and Tissue Types 1 (5/28/2026)

Copy of Body Systems and Tissue Types 1 (5/28/2026)

Epithelial Tissue

Muscle Tissue

Nervous Tissue

Connective Tissue

Epithelial Tissue

Muscle Tissue

Nervous Tissue

Connective Tissue

Which of the following is a type of connective tissue