Section 3, Chapter 5Membranes, Muscles, and Neurons

Epithelial Membranes

Serous Mucous Cutaneous Synovial

Types of Membranes

Serous Membrane

Mucous Membrane

Cutaneous Membrane

Synovial Membrane

Types of Membranes

Serous Membrane

• Lines cavities not open to outside

• Thoracic cavity & abdominal cavity

• Mesotheilial Cells

• Specialized simple squamous epithelium

• Secretes serous fluid (watery)

• Reduces friction between organs

Figure 1.11 Serous membranes of the heart and lungs

Serous Pericardium = serous membrane surrounding the heart

Pleura = serous membrane surrounding the lungs

Figure 1.12 Serous membranes of the abdomen

Peritoneum – Serous membrane that surround several

abdominal organs

Serous Membrane

Mucous Membrane

• Lines cavities & tubes open to outside

Types of Membranes

Serous Membrane• Lines cavities & tubes open to outside

• Nasal & oral cavity

• Digestive, respiratory, and reproductive tracts

• Goblet Cells – Secrete Mucus

Cutaneous Membrane

• Skin

Types of MembranesTypes of Membranes

• Skin

• Protective covering

Mucous Membrane

Synovial Membrane

• Composed entirely of connective tissue

Types of MembranesTypes of Membranes

Mucous Membrane• Composed entirely of connective tissue

• Lines joints

• Secretes synovial fluid = clear viscous fluid

Muscle Tissues

Muscle Tissue

• Designed to contract

Muscle Tissues

Skeletal Muscle Smooth Muscle Cardiac Muscle

Skeletal Muscle

• Moves Skeleton = voluntary

• Characteristics

• Long tubular cells

• Several peripheral nuclei

• Striated

Smooth Muscle

• Involuntary

• Within walls of viscera

• Stomach, intestines, uterus, blood vessels, ect.

• Tapered cells, form broad sheets

• Single central nucleus

Cardiac Muscle

• Located only within wall of the heart

• Involuntary control

• Striated

• Branched cells with central nuclei

• Intercalated discs

Nervous Tissue

• Locations = brain, spinal cord, and peripheral nerves

• Regulates, coordinates, and integrates body activities

• Cells = Neurons & Neuroglia

• Neurons transmit impulses

• Neuroglia support neurons

End Section 3, Chapter 5