Chapter 20 Flashcards
(25 cards)
Negative feedback mechanisms used to…
- Maintain homeostasis
- Analogous to a furnace that produces heat
- Found in only birds or mammals
What is the function of neurons?
To receive and transmit signals to the whole body through electrical and chemical impulses across synapses
Integumentary system protects against…
- Infection
- Excessive heat/cold
- Physical injury
Animals regulate thier internal environment by…
- Negative/positive feedback
- Homeostasis
Physiology
Studies the function or an organism
Anatomy
studies the structure of an organism
Acne / inflammation
Caused by obstruction of hair follicles
3 types of vertebrae muscle
- Skeletal
- Smooth
- Cardiac
Neurons are NOT classified as muscles bec…
They transmit electrical impulses , they do not contract for movement like muscle
What are bioengineers using to produce organ transplants?
- Bioengineering tissues/organs in labs
- Growing tissue/organs on scaffolds
- 3d printing
Types of connective tissue…
- Loose
- Fibrous
- Adipose
- cartilage
- Bone
- Blood
Structural adaptations enhance exchange with the environment, name two such systems
Digestive : eliminates waste and ingests food
Respiratory : exchanges gases between the external environment & blood
Loose connective tissue
Fibers and collagen helps join skin to underlying tissues
Fibrous connective
Densely packed collagen packed fibers forming tendons (attaches muscle to bone)
Adipose connective
Stores fat in closely packed cells
Cartilage
Flexible skeletal that surrounds ends of bones
Bone
Collagen fibers embedded in a hard substance containing calcium, magnesium, and phosphate
Blood
Transports substances through out body
Skeletal system
Supports body movement and protects organs
Nervous system
- Detects stimuli
- Integrates info
- Directs responses
Lymphatic/ immune system
- Protects from disease/cancer
- Mph attic system returns excess body fluid back to circulatory system
Types of tissue
- Epithelial
- Connective
- Muscle
- Nervous
Endocrine system
Secretes hormones that regulates body activities
Negative feedback
Reduces or reverses change in internal environment
