A&p Lecture Exam 1content To Be Reviewed
Studied by 0 people
Learn
Practice Test
Spaced Repetition
Match
FlashcardsWhat is the lowest level of biological organization?
Atom.
What is the group of similar cells called?
Tissue.
1/34
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
35 Terms
What is the lowest level of biological organization?
Atom.
What is the group of similar cells called?
Tissue.
What does the sodium-potassium pump do?
Moves 3 sodium ions out and 2 potassium ions in using ATP.
What do Meissner's corpuscles detect?
Light touch.
What is fibrosis?
Replacing damaged tissue with scar tissue instead of regenerating the original tissue.
What is the function of the stratum corneum?
Prevents water loss and provides a protective layer.
How does melanin protect the skin?
Absorbs UV radiation to protect DNA from damage.
What is an organ?
A group of two or more tissues.
What are the four basic types of tissue?
Epithelial tissue, connective tissue, muscle tissue, nervous tissue.
What is homeostasis?
The maintenance of a stable internal environment in the body.
What is the role of the brain in homeostasis?
It acts as the control center.
What does negative feedback do in homeostasis?
Reverses changes to restore balance.
What is the phospholipid bilayer modeled after?
Fluid mosaic model.
What is the hydrophilic part of a phospholipid?
The phosphate end.
What can move easily through the plasma membrane?
Lipid-soluble substances.
What is required for active transport?
ATP (energy).
What happens to a red blood cell in a hypotonic solution?
It swells and bursts (lysis).
What occurs in a hypertonic solution?
The red blood cell shrinks or shrivels (crenation).
What is facilitated diffusion?
When a small polar solute binds to a membrane protein and changes shape to cross the plasma membrane.
What is a hypotonic solution?
A solution with a very low solute concentration.
What is the hypodermis?
The layer that anchors the skin to underlying structures like muscle or bone.
What is the role of stratum basale?
Cell division (mitosis) and it is closest to the basement membrane.
What are the functions of the skin?
Protection from pathogens, water loss, and physical injury.
What receptors detect pressure in the skin?
Pacinian corpuscles.
What do merocrine sweat glands produce?
Sweat.
What are the three types of exocrine glands in the skin?
Merocrine, apocrine, and sebaceous glands.
What do endocrine glands produce?
Hormones.
What are the primary tissues in the skin?
Epithelial, connective, muscle, and nervous tissues.
What are keratinocytes responsible for?
Producing 80% of keratin in the skin.
What role do melanocytes play?
Producing melanin.
What does the term 'glycocalyx' refer to?
Carbohydrates attached to lipids and proteins on the cell membrane.
What type of membrane transport requires energy?
Active transport.
What is an example of passive transport?
Simple diffusion.
What is the result of tissue repair in the skin?
Fibrosis, where damaged tissue is replaced.
What is unique about fingerprints?
They are genetically determined.