Chapter 5 Questions And Answers Flashcards
What does the human body consist of ?
30 trillion cells, 206 bones, 700 muscles, approximately 5L of blood, and about 25 miles of blood vessels.
What are the two most important body positions to a blood drawer ?
1) Supine
2) Prone
What are the body planes ?
- Frontal (Coronal) Plane
- Midsagittal (Medial) Plane
- Sagittal Plane
- Transverse Plane
What is the purpose of directional terms ?
To describe the relationship of an area or part of the body with respect to the rest of body or body part , which is often paired with a term that means the opposite.
Body cavities are divided into what groups ?
1) Dorsal
2) Ventral
What does the cranial cavity House ?
It houses the brain.
What does the spinal cavity House ?
It encases the spinal cord.
What does the dorsal cavity include ?
It includes the cranial cavity and spinal cavity.
What does the thoracic cavity House ?
It houses the heart and lungs.
What does the abdominal cavity House?
It houses the organs including stomach, liver, pancreas, gallbladder, spleen, and kidneys.
What does the pelvic cavity House ?
It houses the urinary bladder and reproductive organs.
What does the ventral cavity include ?
It includes the thoracic cavity, abdominal cavity, and pelvic cavity.
How does the body maintain homeostasis ?
By compensating for changes in a process that involves feedback and regulation in response to internal and external changes.
What are the two primary processes of metabolism ?
1) Catabolism
2) Anabolism
Human body consists of trillions of cells responsible for what ?
For all the activities of the body.
Every cell has a ________
Nucleus
What are the 4 basic tissue types ?
- Connective
- Epithelial
- Muscle
- Nerve
What are the most important basic structural components of cells ?
- Nucleus
- Chromosomes
- Cytoplasm
- Organelles
- Mitochondria
What is the function of a Nucleus ?
The command center of the cell that contains the chromosomes or genetic material.
What is a function of a chromosome ?
To govern all cell activities, including reproduction
What is the function of a Cytoplasm ?
Site of numerous cellular activities
What is the function of an organelle ?
Varied, distinct functions depending on the type
What is the function of a Mitochondria ?
Play a role in energy production
What is the function of the skeletal system ?
It is the framework that gives the body shape and support, protects internal organs, with muscular system it provides movement and leverage. Also responsible for calcium storage and hemopoiesis or hematopoiesis.
What does the skeletal system structures include ?
- 206 bones
- joints
- supporting connective tissue that forms the skeleton
Bones can be classified by shape in to what 4 groups ?
- Flat
- Irregular
- Long
- Short
What are flat bones ?
Rib bones and most skull (cranial) bones
What are irregular bones ?
Back bones (vertebrae) and some facial bones
What are Long bones ?
Leg (femur, tibia, fibula), arm (humerus, radius, ulna), and hand bones (metacarpals, phalanges)
What are short bones ?
Wrist (carpals) and ankle bones (tarsals)
What are the disorders of the skeletal system ?
- Arthritis
- Bursitis
- Gout
- Osteomyelitis
- Osteochondritis
- Osteoporosis
- Rickets
- Tumor
What are the diagnostic tests associated with the skeletal system ?
- Alkaline Phosphate
- Calcium
- Complete Blood Count (CBC)
- Erythrocyte sedimentation rate (ESR)
- Phosphorus
- Synovial Fluid Analysis
- Uric Acid
- Vitamin D
The what are the 3 types of muscles in the muscular system ?
1) cardiac
2) Skeletal
3) smooth (visceral)
What is muscle type determined by ?
- Location
- Histolgic (microscopic) cellular characteristics
- how muscle action is controlled
What are the disorders of the muscular system?
- Atrophy
- Muscular Dystrophy
- Myalgia
- Tendonitis
What are the diagnostic tests associated with the muscular system ?
- Autoimmune antibodies
- Creatine phosphokinase (CPK / CK)
- CPK / CK isoenzymes
- Lactic Acid
- Lactic Dehydrogenase (LD/LDH)
- Myoglobin
- Electromyography
What is the Location, Cell characteristics, and Control Action of the Smooth Muscle ?
- Located : wall of hollow organs, vessels, respiratory passageways
Cell characteristics : nonstriated
Control Action : involuntary
What is the Location, Cell characteristics, and Control Action of the Cardiac Muscle ?
- Located : Wall of the heart
- Cell Characteristics : lightly striated
- Control Action : involuntary
What is the Location, Cell characteristics, and Control Action of the Skeletal Muscle ?
- Located : Attached to bones
- Cell Characteristics : heavily striated
Control Action : Voluntary
Structures within the skin help do what ?
Help regulate body temperature, eliminate small amounts of waste through sweat, receive environmental stimuli (sensation of heat, cold, touch, and pain), and manufacture Vitamin D from sunlight
The structures of the integumentary system consist of what ?
The skin and associated structures referred to as appendages which include exocrine glands, hair, and nails. It also includes blood vessels, nerves, and sensory organs within the skin.
What are the two main layers of the skin ?
1) epidermis
2) Dermis
The epidermis is made up of what ?
- Stratified (layered) epithelial cells
- Squamous (scalelike) epithelial cells
What is the function of the hair ?
Protection
What is the function of the hair follicles ?
To produce hair
What is the function of arrector pili ?
Responsible for the formation of “goosebumps” as they react to pull the hair up straight when a person is cold or frightened. When the muscle contracts it presses on the nearly sebaceous gland, causing it to release sebum to help lubricate the hair and skin
What is the function of nails ?
To protect the fingers and toes and help grasp objects
What is the function of the Sebaceous (oil) glands ?
Sebum helps lubricate the skin and hair to keep it from drying out
What is the function of the sudoriferous (sweat) glands ?
Produce perspiration, a mixture of water, salts, and waste
What is the only layer of the skin where mitosis (cell division) occurs ?
Stratum Basale / Stratum Germinativum
Cells in the stratum germinativum are nourished by what ?
Diffusion of nutrients from the dermis
As the cells divide in the epidermis what happens to them ?
They are pushed toward the surface, where they gradually die from lack of nourishment and become keratinized (hardened), which helps thicken and protect the skin
What layer is thicker the Dermis or epidermis ?
Dermis
What is the Dermis composed of ?
It is composed of elastic and fibrous connective tissue.
What does the Dermis contain ?
Blood and lymph vessels, nerves, sebaceous and sudoriferous glands, and hair follicles