A&P2 Lab 1

All of the following statements about burns are true EXCEPT? Patients with 3rd degree burns have less pain than patients with 1st degree burns 3rd degree burns are the least serious 1st degree burns affect only the epidermis

3rd degree burns are the least serious

All of the following statements about skin are true EXCEPT? Skin is the largest organ in the body Skin is the least vulnerable organ in the body Skin provides a barrier between the internal body and external world Skin helps to regulate temperature of the body

Skin is the least vulnerable organ in the body

The ________ is the structure responsible for goose bumps.

arrector pili muscle

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

connective tissue

The dermis contains mostly which type of tissue?

dense irregular connective tissue

What is the function of a lamellar (Pacinian) corpuscle?

detection of pressure stimulus

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

epithelial tissue

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

Which of the following is NOT one of the four tissue types? muscle connective epithelial lumen nervous

lumen

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 labeled layers?

stratum basale (they are generated by mitosis here and then migrate upward through the epidermis)

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

stratum corneum

From deep to superficial, the layers of the epidermis of thick skin are ________.

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

What is histology?

the study of the microscopic structure of tissues

What is the function of a sebaceous gland?

to lubricate hair and prevent infection

Which of these is not a function of the subcutaneous layer? to supply cells to replace those lost from the epidermis to loosely connect the skin to underlying tissue to store energy to insulate the body from heat loss

to supply cells to replace those lost from the epidermis