Dr. Mack MC

What is positive feedback

Feedback that increases the output of a process. Leads system further from starting point

What is an example of positive feedback

childbirth; the contractions

What is negative feedback

A response to a change in the body that counteracts or opposes the initial change.

What is an example of negative feedback

body temperature; body responds to being too hot (sweating) or too cold (shivering)

What is an organ composed of

Tissues

What is the parietal pleura

lines the walls of the thoracic cavity and lungs

What is homeostasis

Maintaining a stable internal environment

What are the cavities of the body

Cranial, dorsal, spinal, thoracic, ventral, abdominal, pelvic, abdominopelvic

What is found in the cranial cavity

brain, pituitary gland

What is found in the dorsal cavity

spinal cord and brain

What is found in the spinal cavity

spinal cord

What is found in the thoracic cavity

heart and lungs

What is found in the ventral cavity

abdominal, pelvic, thoracic

What is found in the abdominal cavity

Digestive organs; liver, stomach, spleen, pancreas, small and large intestines

What is found in the abdominopelvic cavity

abdominal cavity and pelvic cavity

What is found in the pelvic cavity

bladder, reproductive organs, rectum

What imaging technique is used for a tumor

MRI

What is the pollex

thumb/digit 1

What are ways you can check for heart rate

Under the ear on the neck or the wrist

Where do you take the temp of a small child

In the armpit

What tissue have lacunae

Bone

What are lacunae

Where the osteocytes chill in the bone

What type of fiber has the greatest tensile strength

Collagen

What is the most dense type of fiber

Collagen

What maintains ear shape

Elastic fibers

What are chondroblasts

Cells that make and release cartilage

What causes edema

Swelling; areolar tissues soaks up liquid which helps to protect the area so we don't hurt it again

What do heart muscles have that keep them from separating

Intercalated discs

What are the steps in tissue repair in order

inflammation, organization, and regeneration

What occurs in inflammation in tissue repair

Redness, pain, swelling, warmth; blood vessel dilate and increase permeability; blood clots

What occurs in organization during tissue repair

Blood clot is replaced with granulation tissue; Epithelium is regenerated, collagen fills in gaps

What occurs in regeneration in tissue repair

Occurs deep to superficial; scab detaches, fibrous tissue matures and epithelium thickens

What are the two types of tissue repair

regeneration and fibrosis

What is regeneration in terms of tissue repair

Same tissue is replaced - needs vacularization and same function as before

What is fibrosis in terms of tissue repair

CT or scar tissue replaces in a not nice format

What type of tissue holds kidneys in place

DRCT

What muscles contract during labor

Smooth

What is melanoma

Skin cancer

Why is skin cancer so dangerous

The cells rapidly divide and spread

What is the function of root hair plexus

Receptor for touch

What kind of gland secretes oily substance

Sebaceous Glands

What are the types of sweat glands

eccrine and apocrine

What is eccrine gland secretion

Through the hair follicles; consists of water, NaCl, and some waste - no odor

What is apocrine gland secretion

Glands burst and contain protein, lipids, cell material. Occurs in axilla and groin regions- has odor

What are dendritic cells

immune cells- macrophages

What is another name for dendritic cells

Langerhans cells

Where are dendritic cells found

stratum spinosum and stratum granulosum

Why do eyebrows have short hair compared to head hair

Eyebrows have a short growing cycle

What is blueness of the skin and why is it caused

Cyanosis - lack of oxygen

What is the pink color of the skin caused by

Vasodilation - heart pumps much quicker

What is melanin

Pigment produced by melanocytes that gives color

What is the function of melanin

Protects against UV radiation

How do apocrine glands secrete

Secretion builds inside and glands break