Chapter Questions
In a multicellular animal, (a) organ systems are always present (b) cells specialize to perform specific functions (c) small size provides more opportunity for capturing food (d) organelles are more numerous (e) organelles carry on more functions.
A group of closely associated cells that carry out specific functions is a(an) (a) colony (b) tissue (c) organ system (d) organelle (e) homeostatic mechanism.
Which tissue consists of cells that fit tightly together to form a sheet of cells? (a) muscle (b) nervous tissue (c) connective tissue (d) epithelial tissue (e) reticular tissue.
Epithelial cells that produce and secrete a product into a duct form a(an) (a) endocrine gland (b) exocrine gland (c) pseudostratified membrane (d) endocrine or exocrine gland (e) serous membrane.
A serous membrane (a) lines a body cavity that does not open to the outside of the body (b) consists of loose connective tissue (c) has a framework of reticular connective tissue (d) covers the body (e) lines the digestive and respiratory systems.
The most numerous fibers in connective tissue are (a) reticular (b) myofibrils (c) collagen (d) elastic (e) glial.
Dense connective tissue is likely to be found in (a) the outer layer of skin (b) tendons (c) bone (d) the air sacs of lungs (c) the framework of the lymph nodes.
Osteocytes are most likely to be found in (a) the outer layer of skin (b) bone (c) cartilage (d) lungs (e) blood.
Tissue that contains fibroblasts and a great deal of intercellular substance is (a) connective tissue (b) muscle tissue (c) nervous tissue (d) pseudostratified epithelium (e) adipose tissue.
Tissue that contracts and is striated and involuntary is (a) connective tissue (b) smooth muscle (c) skeletal muscle (d) pseudostratified (e) cardiac muscle.
Glial cells are most characteristic of (a) muscle that is striated and voluntary (b) cardiac muscle tissue (c) nervous tissue (d) stratified epithelium (e) loose connective tissue.
Tissue that has a hard, rubbery matrix and lacks blood vessels is (a) integumentary tissue (b) bone (c) nervous tissue (d) stratified epithelium (e) cartilage.
The contractile elements in muscle tissue are (a) myofibrils (b) elastic (c) collagen (d) lacunac (c) stress proteins.
Which system consists of glands that secrete hormones? (a) integumentary (b) skeletal (c) nervous (d) endocrine (e) exocrine.
Which system has the homeostatic function of helping to maintain constant calcium level in the blood? (a) integumentary (b) skeletal (c) nervous (d) reproductive (e) exocrine.
Which system has the homeostatic function of helping to regulate volume and composition of blood and body fluids? (a) integumentary (b) muscular (c) reproductive (d) urinary (e) exocrine.
Many homeostatic functions are maintained by (a) negative feedback systems (b) positive feedback systems (c) set points (d) stressors (e) exocrine glands.
An ectotherm (a) may use behavioral strategies to help adjust body temperature (b) has a variety of homeostatic mechanisms to precisely regulate body temperature (c) depends on sensors in the hypothalamus to regulate temperature (d) has a higher rate of enzyme activity than a typical endotherm (e) must expend more energy on thermoregulation than an endotherm.
The state of torpor caused in some animals by lack of food or water during periods of high temperature is known as (a) positive feedback (b) hibernation (c) endothermy (d) ectothermy (e) estivation.