A&P
Define anatomy
The study of how living organisms perform their vital functions
What is the smallest unit of matter?
Atom
What is the biggest organ of the human body?
The skin
3 muscles in the human body
Cardiac, skeletal, smooth
Location at which bones connect with one another
Joint
Opposite of superior
Inferior
The atomic number gives the number of:
Protons
What is the primary component of hair and nails?
keratin
What is the difference between a ligament and a tendon?
Ligament- fibrous tissue that attaches bone to bone
Tendon- fibrous tissue that attaches bone to muscle
Forms lighter, less dense portion of the bone, contains trabeculae and red bone marrow
Spongy bone
What is negative feedback?
maintaining stable, internal conditions to prevent harmful changes in the composition of body fluids and the environment in cells *failure to maintain homeostasis leads to illness or possible death*
How many R groups are associated with proteins?
20
What are the accessory organs to the integumentary system
hair, nails, glands
Purpose of ATP during muscle contraction
ATP breaks the myosin actin crossbridge and allows for myosin head to detach during muscle contraction
Joints that connect bones with a fluid-filled space (synovial cavity), which is enclosed by a membrane and filled with synovial fluid
Synovial joints
Serous membrane associated with the abdominal pelvic cavity
Peritoneum
What is the pH of normal blood?
7.35-7.45
Name the 3 layers of the skin from superficial to deep
Epidermis, dermis, hypodermis/subcutaneous layer
Compare and contrast skeletal muscle and smooth muscle
They are both muscles in the body. Skeletal muscle is striated and voluntary whereas, smooth is unstriated and involuntary.
Oval shaped head over one bone moves in an elliptical cavity in another bone, movement in all directions except around an axis
Condyloid bone
Define positive feedback and give 2 examples
An initial stimulus produces a response that amplifies or enhances the original change in conditions rather than opposing
ex: breast feeding, childbirth, blood clotting
What are the 5 top elements in the human body?
Oxygen, Carbon, Hydrogen, Nitrogen, Calcium
Define melanin and it's role in the integumentary system
Melanin is a pigment that gives color to the skin, hair, and eyes. It helps protect the skin from the harmful effects of ultraviolet (UV) radiation from the sun.
What is the difference between involuntary and voluntary muscles?
Involuntary are controlled by the autonomic nervous system and voluntary are controlled by the somatic nervous system
permit slight movement of the joint, mostly cartilaginous joints
Partly movable joints