Biology 12

_____is the number of bones in the human skeleton

206

The human body contains approximately____(how many?) skeletal muscles

650

The_____cavity contains the urinary and reproductive organs

Abdominal

The femur, humerus and ulna are all bones found in the____skeleton (a subdivision of the entire human skeleton)

Appendicular

The human body plan exhibits_____symmetry

Bilateral

______are fluid-filled sacs found in joints such as the knee and elbow that absorb sudden pressure due to impact

Bursae

Matching: ____ball and socket joint a.Elbow joint ____hinge joint b. Joint at base of thumb ____pivot joint c. Shoulder joint ____saddle joint d. Joints between carpels ____gliding joint e. Joint between head and neck

C A E B D

Bone serve as reservoirs of the minerals______and_____, which are used in many of the body's chemical reactions

Ca P

_____muscle tissue is both involuntary and striated and is only found in the heart

Cardiac

The human fetal skeleton is composed mainly of_____rather than bone

Cartilage

The concentration of a body's sense organs in the head are called_______

Cefilization

Bones are living tissue and so are composed of______

Cells

All body cavities arise from a single cavity in the developing fetus called the______

Coelum

Because muscular movements are restricted to____of muscle fibers (ie, they cannot extend themselves) , skeletal muscles may only pull on the bones to which they are attached and may not push on them

Contraction

Muscle cells are unique in that, after undergoing mitosis, they do not undergo subsequent_______,resulting in long, thin, multinucleate cells

Cytokenisis

The_____is a thin sheet of muscle that separates the ventral cavity into two separate cavities

Diaphragm

The fingers are located more_____to the midline than the shoulder, while the shoulder is located more_____to the midline than the fingers

Distal Proximal

The____cavity contains both the brain and the spinal cord

Dorsal

Skeletal muscles, such as the biceps brachii, that bend joints are called______, while muscles that pull joints back to their unbent positions, such as triceps brachii, are called______

Flexors Extensors

___canals are channels through compact bone tissue that function as conduits for arteries, veins and nerves

Haversian

Three types of joints are identified depending on the range of motion possible. Joints, such as those between skull bones, are called____joints, while those between vertebrae are called____ ____joints and those such as the shoulder, knee and elbow are classified as_____ ____joints

Imoveable Slightly moveable Freely moveable

The human skeletal system consists not only of bones, but also of the____and_____tissue that hold the bones together

Joints Connective

The term____refers to the side of the organism, while the term_____refers to the midline of the organism

Lateral Medial

Connective tissue that connects bone to bone is called____and that connects muscle to bone is called_____

Ligaments Tendons

Because they are so active in comparison to other type of cells, muscle cells typically contain many more____(an organelle) than other types of cells.

Mitochondria

Bones function to provide the body with support and shape, but also serve as anchors for_____attachment, protection of______organs and as producers of_____cells

Muscle Internal Blood

Involuntary muscles are typically controlled by the body's____system and also by certain biological chemicals called_______

Nervous Hormones

A group of organs designed to carry out a specific function is called a(n)_______ ______

Organ system

Precursors to mature bone cells,______are concentrated along the inside of the periosteum

Osteoblasts

_____ ____is a type of bone tissue found in spongy bone, which produces the body's red blood cells.

Red Marrow

Many internal organs, such as the esophagus, stomach, and intestines, are composed of_____muscle tissue which functions without conscious, voluntary control

Smooth

_____bone has many internal spaces and its found in the ends of long bones and in the middle of short ones, while____bone, which is very dense, is found in the middle of long bones, providing them with support

Spongy Compact

Skeletal muscle tissue is called_____because of the dark, narrow bands running through it which are clearly visible under a microscope

Striated

The______cavity includes the chest region and contains the heart and lungs

Thoracic

Muscle_____results from permanent, partial contraction of muscle fibers and functions to keep the skeleton properly aligned as well as to hold some internal organs in place

Tone

____ ______is a type of bone tissue that is composed mainly of fat cells and is found in the shafts of long bones

Yellow Marrow