3 Key Concept Questions What are the functions of the skeletal system? What is the structure of a typical bone?What are the three different kinds of joints?
4 The skeletal system protects, supports, and moves the body.
5 Cartilage is connective tissue between bones. cushions bones allows for smooth movementconnect two bonescartilage
6 Bones connect to form joints. Joints are places were two bones meet.There are three types of joints.fibrous, which does not allow for movementfibrous joint
7 cartilaginous, which allows partial movement cartillage
8 synovial, which allows for greater movement GLIDING JOINTPIVOT JOINTBALL-AND-SOCKET JOINTSADDLE JOINTHINGE JOINT
9 Ligaments are long bands of tissue that connect bones across a joint.
10 Bones are living tissue. Bone is made of compact bone tissue and spongy bone tissue.Compact boneSpongy bone
11 Compact bone is hard and dense. Osteocytes (bone cells) maintain compact bone rings.Haversian canals allow blood vessels in the bone.osteocytesblood vesselHaversian canals
12 Spongy bone protects red or yellow bone marrow. Red bone marrow produces blood cells.Yellow bone marrow is mostly fat.PeriosteumA layer of connectivetissue that covers boneRed bone marrow
13 Key Concept Questions What are the functions of the skeletal system? ProtectsSupportsmoves the bodyWhat is the structure of a typical bone?Bone is made of compact bone tissue and spongy bone tissue.What are the three different kinds of joints?FibrousCartilaginousSynovial
15 Key Concept QuestionsWhat are the three types of muscle tissue?
16 The muscular system moves substances throughout the body. bones of the skeletal systemfood through digestive systemblood through circulatory systemfluids through excretory system
17 There are three types of muscle tissue. skeletal muscle smooth muscle cardiac muscleSKELETAL MUSCLESMOOTH MUSCLECARDIAC MUSCLE
18 Skeletal muscle attaches to the skeleton by tendons. Tendons connect muscle to bone.Skeletal muscles are mostly voluntary.SKELETAL MUSCLE
19 Smooth muscle lines organs and is involuntary. move food through digestive organsempty liquid from the bladdercontrol width of blood vesselsSmooth musclearound this artery allows theartery to regulate blood flowby shrinking and expanding.SMOOTH MUSCLE
20 Cardiac muscle is found only in the heart. pumps blood throughout body controlled by pacemakercontains more mitochondria than skeletal muscle cellsCARDIAC MUSCLE
21 Muscles contract when the nervous systems causes muscle filaments to move. Muscle fibers are cells of the muscular system.muscle fibermuscleneuromuscular junctionneuronMUSCLE
22 Key Concept Questions What are the three types of muscle tissue? skeletal musclesmooth musclecardiac muscle
24 Key Concept QuestionWhat are the functions of the integumentary system?
25 What are the functions of the integumentary system? The integumentary system serves as a barrier against infection and injury, helps to regulate body temperature, removes waste products from the body, and provides protection against ultraviolet radiation from the sun
26 The integumentary system consists of many parts. skinhairnailsoil glandssweat glandsproteins, such as keratin
27 Integumentary system removes substances from the body. water salts ureaporesweatglands
28 The outermost layer of the skin is the epidermis. dead skin cells Oils poresepidermispore
29 Cells in the epidermis produce keratin and melanin. Keratin makes cells waterproof and tough feeling.Melanin is a dark pigment that absorbs UV rays.
30 The dermis contains most of the tissues in the skin. sweat glands oil glandspressurereceptorsblood vesselshair folliclesdermishair follicleoil glandpressurereceptorssweat gland
31 A hair follicle is pit of cells that produces hair. The dermis also produces elastin and collagen.Elastin makes skin flexible.Collagen gives skin its shape.
32 Beneath the dermis is a layer of fat. fat layer
33 Key Concept Question barrier against infection and injury What are the functions of the integumentary system?barrier against infection and injuryregulate body temperatureremoves waste products from the bodyprovides protection against ultraviolet radiation from the sun