Lab #1

Bone and blood can be categorized as which type of tissue?

Connective tissue

The ________ is the structure responsible for goose bumps.

arrector pili muscle

arrector pili muscle

bundle of smooth muscle cells associated with a hair follicle

The dermis contains mostly which type of tissue?

dense irregular connective tissue

Which type of tissue covers the surface of organs or lines the hollow spaces of organs?

epithelial tissue

hair follicles

extensions of the epidermis that extend deep into the dermis

In which layer would you be most likely to find adipose tissue?

hypodermis or subcutaneous layer

Like all epithelial layers in the body, the epithelium of skin sits on a connective tissue layer. The epithelium of skin is specifically called the epidermis and can be described as _____________________.

keratinized stratified squamous epithelium

What is the most common cell type in the epidermis?

keratinocytes

skin

largest and most vulnerable organ in the body

These cells produce a brown-to-black pigment that colors the skin and protects DNA from ultraviolet radiation damage. The cells are __________.

melanocytes

Which tissue type is responsible for allowing the heart to beat and for propelling food through the tube of gastrointestinal tract?

muscle tissue

Which type of cellular structure stains dark blue or purple in a histological image using an H&E stain?

nuclei

These glands are found all over the skin except in the palms of the hands and soles of the feet. They produce an oily substance that lubricates skin and hair.

sebaceous glands

Cell division would be most common among cells in which of the layers?

stratum basale

The cells in this layer of epidermis are dead, and their flat, scale-like remnants are filled with keratin.

stratum corneum

What are the layers of epidermis of thick skin, from deep to superficial?

stratum germinativum (basale), stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

hypodermis

subcutaneous region

What is histology?

the study of the microscopic structure of tissues

What is the function of the sebaceous gland?

to lubricate hair and prevent infection